Android ViewPager animation lag after first swipe

Android ViewPager animation lag after first swipe - java

I'm writing a calculator app for Android using the shunting yard infix2postfix method (well at least is some sort of it, since I'm relatively new to java). I have a ViewPager set for swiping between base keyboard and function keyboard. Both keyboards are fragments that contain simple buttons. The stack is a custom Object Stack class I implemented. The first time swiping the keyboards slide perfectly, but after the first fiew computations, the ViewPager starts lagging a bit, and I really don't understand why. Does anybody have any suggestions?
Here is the code for ViewPager:
public class MainActivity extends AppCompatActivity {
private static final int NUM_PAGES = 2;
private Fragment[] keypads = new Fragment[NUM_PAGES];
private ViewPager pager;
private PagerAdapter pageradapter;
...
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
...
pager = (ViewPager) findViewById(R.id.keypadview);
pageradapter = new KeypadSliderAdapter(getSupportFragmentManager());
pager.setAdapter(pageradapter);
keypads[0] = new NumericKeypad();
keypads[1] = new FunctionKeypad();
}
private class KeypadSliderAdapter extends FragmentStatePagerAdapter
{
public KeypadSliderAdapter(FragmentManager fm)
{
super(fm);
}
#Override
public Fragment getItem(int position)
{
return keypads[position];
}
#Override
public int getCount()
{
return NUM_PAGES;
}
}
the base keyboard:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="1"
android:onClick="keyPressed"/>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="2"
android:onClick="keyPressed"/>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="3"
android:onClick="keyPressed"/>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="+"
android:onClick="keyPressed"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="4"
android:onClick="keyPressed"/>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="5"
android:onClick="keyPressed"/>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="6"
android:onClick="keyPressed"/>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="-"
android:onClick="keyPressed"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="7"
android:onClick="keyPressed"/>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="8"
android:onClick="keyPressed"/>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="9"
android:onClick="keyPressed"/>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="*"
android:onClick="keyPressed"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="."
android:onClick="keyPressed"/>
<Button android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="0"
android:onClick="keyPressed"/>
<Button android:layout_height="match_parent"
android:layout_weight="1"
android:layout_width="0dp"
android:text="="
android:onClick="equalsKeyPressed"/>
<Button android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="/"
android:onClick="keyPressed"/>
</LinearLayout>
package com.soloinfor.calculator;
import android.os.Bundle;
import android.view.View;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.ViewGroup;
public class NumericKeypad extends Fragment
{
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.numeric_keypad, container, false);
return view;
}
}
the function keyboard:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button android:text="sin()"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textAllCaps="false"
android:onClick="functionKeyPressed"
android:tag="sin("/>
<Button android:text="cos()"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textAllCaps="false"
android:onClick="functionKeyPressed"
android:tag="cos("/>
<Button android:text="tan()"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textAllCaps="false"
android:onClick="functionKeyPressed"
android:tag="tan("/>
<Button android:text="π"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textAllCaps="false"
android:onClick="functionKeyPressed"
android:tag="π"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button android:text="ln()"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textAllCaps="false"
android:onClick="functionKeyPressed"
android:tag="ln("/>
<Button android:text="log\u2081\u2080()"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textAllCaps="false"
android:onClick="functionKeyPressed"
android:tag="log\u2081\u2080("/>
</LinearLayout>
package com.soloinfor.calculator;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.View;
import android.view.ViewGroup;
import android.view.LayoutInflater;
public class FunctionKeypad extends Fragment
{
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
return inflater.inflate(R.layout.function_keypad, container, false);
}
}

Your view hierarchy is huge. You should somehow flatten it, by avoiding nested LinearLayouts and employing RelativeLayout instead. Although you don't have heavy operations, the lag you are experiencing is due to inflation, layout and drawing the views.
Use Hierarchy Viewer and run LINT check. LINT will tell you all the possible ways to flatten the layouts.

Related

How to get the data from firebase and display inside the spinner?

I would like to display all the registerEventName inside the spinner in order to let the user to select from it. But how to get the data from firebase and display inside the spinner? Hope someone can help me on this.
XML File
For example i want to change EditText of eventTitle to spinner.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="#+id/createEventLayout"
>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:weightSum="10"
android:background="#89bcd4"
android:padding="10dp"
android:layout_height="wrap_content">
<TextView
android:layout_width="0dp"
android:layout_weight="4"
android:text="Title of event"
android:layout_height="wrap_content" />
<EditText
android:id="#+id/eventTitle"
android:layout_width="0dp"
android:inputType="text"
android:maxLines="1"
android:lines="1"
android:layout_weight="6"
android:imeOptions="actionNext"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:weightSum="10"
android:background="#dce2e6"
android:padding="10dp"
android:layout_height="wrap_content">
<TextView
android:layout_width="0dp"
android:layout_weight="4"
android:text="#string/createEventDesc"
android:layout_height="wrap_content" />
<EditText
android:id="#+id/eventDes"
android:layout_width="0dp"
android:layout_weight="6"
android:lines="1"
android:inputType="text"
android:maxLines="1"
android:imeOptions="actionNext"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:weightSum="10"
android:background="#89bcd4"
android:padding="10dp"
android:layout_height="wrap_content">
<TextView
android:layout_width="0dp"
android:layout_weight="4"
android:text="#string/createEventLocation"
android:layout_height="wrap_content" />
<EditText
android:maxLines="1"
android:lines="1"
android:id="#+id/eventLocation"
android:layout_width="0dp"
android:layout_weight="6"
android:inputType="text"
android:imeOptions="actionNext"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:weightSum="10"
android:background="#dce2e6"
android:padding="10dp"
android:layout_height="wrap_content">
<TextView
android:layout_width="0dp"
android:layout_weight="4"
android:text="Employee email"
android:layout_height="wrap_content" />
<EditText
android:id="#+id/eventAttendee"
android:layout_width="0dp"
android:layout_weight="6"
android:hint="Place more attendee by comma seprated"
android:maxLines="1"
android:lines="1"
android:inputType="textEmailAddress"
android:imeOptions="actionNext"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:background="#89bcd4"
android:padding="10dp"
android:layout_height="wrap_content">
<TextView
android:id="#+id/startAt"
android:layout_width="0dp"
android:layout_weight="3"
android:text="#string/createEventStart"
android:layout_height="wrap_content" />
<LinearLayout
android:orientation="vertical"
android:layout_width="0dp"
android:layout_weight="7"
android:layout_height="wrap_content">
<DatePicker
android:id="#+id/startDate"
android:layout_width="wrap_content"
android:calendarViewShown="false"
android:datePickerMode="spinner"
android:layout_weight="4"
android:layout_height="wrap_content" />
<TimePicker
android:id="#+id/startTime"
android:layout_width="wrap_content"
android:layout_weight="4"
android:timePickerMode="spinner"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:background="#dce2e6"
android:padding="10dp"
android:layout_height="wrap_content">
<TextView
android:id="#+id/endAt"
android:layout_width="0dp"
android:layout_weight="3"
android:text="#string/createEventEnd"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_width="0dp"
android:orientation="vertical"
android:layout_weight="7"
android:layout_height="wrap_content">
<DatePicker
android:id="#+id/endDate"
android:layout_width="wrap_content"
android:calendarViewShown="false"
android:datePickerMode="spinner"
android:layout_height="wrap_content" />
<TimePicker
android:id="#+id/endTime"
android:timePickerMode="spinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:weightSum="10"
android:background="#89bcd4"
android:padding="10dp"
android:layout_height="wrap_content">
<Button
android:maxLines="1"
android:id="#+id/createEvent"
android:layout_width="0dp"
android:layout_weight="5"
android:text="Create Event"
android:layout_height="wrap_content" />
<Button
android:id="#+id/cancelEvent"
android:layout_width="0dp"
android:layout_weight="5"
android:text="Cancel"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
</ScrollView>
</LinearLayout>
Event List Adapter Java File
package com.example.edward.neweventmanagementsystem.adapter;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.BaseAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import com.example.edward.neweventmanagementsystem.R;
import com.example.edward.neweventmanagementsystem.Model.ScheduledEvents;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Khushvinders on 21-Oct-16.
*/
public class EventListAdapter extends BaseAdapter {
private Context context;
private List<ScheduledEvents> scheduledEvents;
private LayoutInflater inflater;
FirebaseDatabase database;
public EventListAdapter(Context context, List<ScheduledEvents> scheduledEvents){
this.context = context;
this.scheduledEvents = scheduledEvents;
inflater = LayoutInflater.from(this.context);
}
#Override
public int getCount() {
return scheduledEvents.size();
}
#Override
public Object getItem(int i) {
return scheduledEvents.get(i);
}
#Override
public long getItemId(int i) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
EventHolder eventHolder;
if (convertView == null) {
convertView = inflater.inflate(R.layout.event_view_layout, parent, false);
eventHolder = new EventHolder(convertView);
convertView.setTag(eventHolder);
} else {
eventHolder = (EventHolder) convertView.getTag();
}
ScheduledEvents scheduledEvents = (ScheduledEvents) getItem(position);
eventHolder.eventTitle.setText(scheduledEvents.getEventSummery());
eventHolder.eventDes.setText(scheduledEvents.getDescription());
eventHolder.eventAttendee.setText(scheduledEvents.getAttendees());
eventHolder.eventStart.setText(scheduledEvents.getStartDate());
eventHolder.eventEnd.setText(scheduledEvents.getEndDate());
eventHolder.eventLocation.setText(scheduledEvents.getLocation());
return convertView;
}
private class EventHolder {
TextView eventDes, eventAttendee, eventStart, eventEnd, eventLocation, eventTitle;
public EventHolder(View item) {
eventTitle = (TextView) item.findViewById(R.id.eventTitle);
eventDes = (TextView) item.findViewById(R.id.eventDes);
eventAttendee = (TextView) item.findViewById(R.id.eventAttendee);
eventStart = (TextView) item.findViewById(R.id.eventStart);
eventEnd = (TextView) item.findViewById(R.id.eventEnd);
eventLocation = (TextView) item.findViewById(R.id.eventLocation);
}
}
}
Sample of firebase database

Android buttons are only clickable on the corners

I have a simple LinearLayout with several buttons, whos state color/text change based on the state of an underlying service, thats working fine.
However the buttons, are only clickable on the right corner ???
The button allSystemServicesToggleButton which i have included the implementation for in this post and only be clicked on the right side/right corner???
Here is my fragment xml layout & Actual screen shot with “Show Layout bounds” set to true:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_height="wrap_content"
android:text="All System Services"
android:textColor="#000000"
android:textSize="20sp"
android:layout_weight="1"
android:layout_width="0dp"
android:singleLine="true"
android:onClick="onClick"/>
<Button
android:id="#+id/allSystemServicesToggleButton"
android:layout_height="wrap_content"
android:text="#string/stopped"
android:layout_weight="1"
android:layout_width="0dp"
android:backgroundTint="#color/stoppedServiceColor"
android:enabled="true"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_height="wrap_content"
android:text="#string/shutdown_all_services"
android:textColor="#000000"
android:textSize="20sp"
android:layout_weight="1"
android:layout_width="0dp"
android:singleLine="true"
android:onClick="onClick"/>
<Button
android:id="#+id/shutdownAllServicesToggleButton"
android:layout_height="wrap_content"
android:text="#string/shutdown"
android:layout_weight="1"
android:layout_width="0dp"
android:enabled="true"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:text="Networks"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="32sp"
android:textColor="#000000"/>
<View
android:id="#+id/viewServicesDivider1"
android:layout_width="match_parent"
android:layout_height="2dp"
android:background="#808080"
android:layout_gravity="center"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_width="0dp"
android:text="Bluetooth Service"
android:textColor="#000000"
android:textSize="20sp"
android:singleLine="true"/>
<Button
android:id="#+id/btServicesToggleButton"
android:layout_height="wrap_content"
android:text="#string/stopped"
android:layout_weight="1"
android:layout_width="0dp"
android:backgroundTint="#color/stoppedServiceColor"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<!--TODO: get requirements for showing paired devices & pairing devices-->
<TextView
android:id="#+id/textPairedText"
android:layout_height="wrap_content"
android:layout_weight="5"
android:text="Paired Bluetooth Devices"
android:textColor="#000000"
android:singleLine="true"
android:textSize="20sp"
android:layout_width="0dp"
/>
<TextView
android:id="#+id/textViewNumberOfConnectedDevices"
android:layout_height="wrap_content"
android:text="0"
android:layout_width="0dp"
android:layout_weight="1" />
<Button
android:id="#+id/btDevicesToggleButton"
android:layout_height="wrap_content"
android:layout_width="0dp"
android:layout_weight="2"
android:text="Pair"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_width="0dp"
android:text="MQTT Service"
android:textColor="#000000"
android:textSize="20sp"
android:singleLine="true"/>
<Button
android:id="#+id/MQTTserviceToggleButton"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_width="0dp"
android:backgroundTint="#color/stoppedServiceColor"
android:text="#string/stopped" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:text="Location Services"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="32sp"
android:textColor="#000000"/>
<View
android:id="#+id/viewServicesDivider3"
android:layout_width="match_parent"
android:layout_height="2dp"
android:background="#808080"
android:layout_gravity="center"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_width="0dp"
android:text="GPS"
android:textColor="#000000"
android:textSize="20sp"
android:singleLine="true"/>
<Button
android:id="#+id/gpsServiceToggleButton"
android:layout_height="wrap_content"
android:text="#string/stopped"
android:layout_weight="1"
android:layout_width="0dp"
android:backgroundTint="#color/stoppedServiceColor"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:text="Command Services"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="32sp"
android:textColor="#000000"/>
<View
android:id="#+id/viewServicesDivider4"
android:layout_width="match_parent"
android:layout_height="2dp"
android:background="#808080"
android:layout_gravity="center"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_width="0dp"
android:text="Voice Recognition"
android:textColor="#000000"
android:textSize="20sp"
android:singleLine="true"/>
<Button
android:id="#+id/voiceRecognitionToggleButton"
android:layout_height="wrap_content"
android:text="#string/stopped"
android:layout_weight="1"
android:layout_width="0dp"
android:backgroundTint="#color/stoppedServiceColor"
/>
</LinearLayout>
Relevant fragment java:
package x.core.fragments;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.speech.tts.TextToSpeech;
import android.support.v4.app.Fragment;
import android.support.v4.graphics.drawable.DrawableCompat;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.Toast;
import x.core.Application.NgfrApp;
import x.core.R;
import x.core.helpers.Util;
import x.core.services.BluetoothService;
import x.core.services.LocationService;
import x.core.services.MqttBrokerService;
import x.core.services.ServicesStateBroadcastReceiver;
import x.core.services.SpeechRecognitionService;
import x.core.services.UIService;
public class ServicesFragment extends Fragment implements View.OnClickListener {
private static final String TAG = "ServicesFragment";
public static ServicesFragment newInstance() {
return new ServicesFragment();
}
private static Button btServicesToggleButton;
private static Button mqttServicesToggleButton;
private static Button gpsServiceToggleButton;
private static Button voiceServiceToggleButton;
private static Button allServiceToggleButton;
private static String stopped = null;
private static String running = null;
private static int runningColorId, stoppedColorId = -1;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_services, container, false);
btServicesToggleButton = rootView.findViewById(R.id.btServicesToggleButton);
mqttServicesToggleButton = rootView.findViewById(R.id.MQTTserviceToggleButton);
gpsServiceToggleButton = rootView.findViewById(R.id.gpsServiceToggleButton);
voiceServiceToggleButton = rootView.findViewById(R.id.voiceRecognitionToggleButton);
allServiceToggleButton = rootView.findViewById(R.id.allSystemServicesToggleButton);
stopped = getResources().getString(R.string.stopped);
running = getResources().getString(R.string.running);
runningColorId = getResources().getColor(R.color.runningServiceColor);
stoppedColorId = getResources().getColor(R.color.stoppedServiceColor);
allServiceToggleButton.setEnabled(true);
allServiceToggleButton.setClickable(true);
allServiceToggleButton.setOnClickListener(this);
return rootView;
}
public void onClick(View v) {
switch (v.getId()) {
case R.id.allSystemServicesToggleButton:
if (ServicesStateBroadcastReceiver.BT_SERVICE_STATE_VALUE==false || ServicesStateBroadcastReceiver.MQTT_STATE_VALUE==false || ServicesStateBroadcastReceiver.NGFR_GPS_SERVICE_STATE_VALUE==false || ServicesStateBroadcastReceiver.VOICE_SERVICE_STATE_VALUE==false)
{
Toast.makeText(NgfrApp.getContext(),NgfrApp.getContext().getResources().getString(R.string.restarting_services),Toast.LENGTH_SHORT).show();
//restartingServices();
}
else
{
Toast.makeText(NgfrApp.getContext(),NgfrApp.getContext().getResources().getString(R.string.all_already_running),Toast.LENGTH_SHORT).show();
}
break;
default:
break;
}
}
}
MainActivity.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:orientation="vertical"
>
<android.support.design.widget.TabLayout
android:id="#+id/activity_main_tabLyout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="fixed" />
<android.support.v4.view.ViewPager
android:id="#+id/activity_main_viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
MainActivity.java, I only included relevant code:
public class MainActivity extends AppCompatActivity {
private static String TAG = "Main";
private static final int CHECK_BT_CODE = 1;
private static final int CHECK_TTS_CODE = 2;
//global boolean flags that will communicate the state of the system at all times
//bluetooth related flags
public boolean isBleSupported = false;
public boolean isBluetoothEnabled = false;
public boolean accessBluetoothManager= false;
public boolean nearbyDevices = false;
//configuration data related
public boolean isConfigurationLoadedCorrectly = false;
//text to speech related
public boolean isTextToSpeechSupported = false;
private Context context = null;
private ServicesStateBroadcastReceiver servicesStateBroadcastReciever = null;
private ViewPager mainViewPager;
private TabLayout tabLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.d(TAG, "Activity started!!");
context = this;
setContentView(R.layout.activity_main);
MainActivityViewPager adapter = new MainActivityViewPager(getSupportFragmentManager());
mainViewPager = (ViewPager) findViewById(R.id.activity_main_viewPager);
mainViewPager.setAdapter(adapter);
tabLayout = (TabLayout) findViewById(R.id.activity_main_tabLyout);
tabLayout.setupWithViewPager(mainViewPager );
}
}
The adapter for my fragments, FragmentStatePagerAdapter:
package x.core.views;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import x.BiometricsFragment;
import x.ServicesFragment;
public class MainActivityViewPager extends FragmentStatePagerAdapter {
public MainActivityViewPager(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
Fragment returnFragment;
switch(position) {
case 0:
returnFragment = ServicesFragment.newInstance();
break;
case 1:
returnFragment = BiometricsFragment.newInstance();
break;
default:
return null;
}
return returnFragment;
}
#Override
public int getCount() {
return 2;
}
public CharSequence getPageTitle(int position) {
CharSequence title;
switch (position) {
case 0:
title = "Services";
break;
case 1:
title = "Biometrics";
break;
default:
return null;
}
return title;
}
}
Thanks

only for corner clicking use this kind of logic
<FrameLayout
android:layout_width="50dp"
android:layout_height="50dp">
<TextView
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#color/colorAccent" />
<TextView
android:id="#+id/tvtttt"
android:layout_width="10dp"
android:layout_height="10dp"
android:layout_gravity="right"
android:background="#F00" />
</FrameLayout>

Managing onClickListeners in more then one xml file

I created an app that adds forms dynamically when a user clicks the add butting and deletes it when he clicks the cancel button. I have two cancel buttons, one in the Field.xml file and the other in the activity_school_search_setup file.
They both have the same ID but the one in the Field.xml file does not delete the field. It appears as though the onclicklistener does not function for the delete button.
Main Java class file
import android.content.Context;
import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.view.View;
import android.widget.Toast;
public class SchoolSearchSetup extends AppCompatActivity implements View.OnClickListener {
private EditText searchSchoolID;
private Button searchSchoolButtonID;
private ListView listOfSchoolsID;
private Button openNewschoolID;
private LinearLayout schoolSetupLayout;
private Button addNewClass;
private EditText classNameEditText;
private Button deleteButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_school_search_setup);
findAllViewsID();
initializeListenners();
}
public void findAllViewsID(){
classNameEditText = findViewById(R.id.classNameText);
addNewClass = findViewById(R.id.addNewClassButton);
schoolSetupLayout = findViewById(R.id.schoolSetupLayout);
searchSchoolID = findViewById(R.id.searchSchoolID);
searchSchoolButtonID = findViewById(R.id.searchSchoolButtonID);
listOfSchoolsID = findViewById(R.id.listOfSchoolsID);
openNewschoolID = findViewById(R.id.openNewschoolID);
deleteButton = findViewById(R.id.delete_button);
}
public void initializeListenners(){
openNewschoolID.setOnClickListener(SchoolSearchSetup.this);
addNewClass.setOnClickListener(SchoolSearchSetup.this);
deleteButton.setOnClickListener(SchoolSearchSetup.this);
}
public void addNewClass(){
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.field, null);
schoolSetupLayout.addView(rowView, schoolSetupLayout.getChildCount() -1);
}
#Override
public void onClick(View view) {
switch(view.getId()){
case R.id.openNewschoolID:
displaySchoolSetUpForms();
break;
case R.id.addNewClassButton:
addNewClass();
break;
case R.id.delete_button:
schoolSetupLayout.removeView((View) view.getParent());
}
}
private void displaySchoolSetUpForms() {
schoolSetupLayout.setVisibility(View.VISIBLE);
}
}
Here is the main XML activity file
activity.school_search_setup.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context="com.example.demeainc.demea.MainActivity"
android:orientation="vertical"
android:background="#color/backgroundColor">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp">
<ImageView
android:id="#+id/backArrowClassView"
android:layout_width="30dp"
android:layout_height="30dp"
android:src="#drawable/ic_arrow_class"
android:layout_marginLeft="5dp"/>
</LinearLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_marginLeft="50dp"
android:text="Search your school."
android:gravity="center"
android:textSize="25dp" />
<android.support.v7.widget.CardView
android:foreground="?attr/selectableItemBackground"
android:clickable="true"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp">
<EditText
android:id="#+id/searchSchoolID"
android:layout_width="270dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:drawableLeft="#drawable/ic_search_black_24dp"
android:hint="Search"/>
</android.support.v7.widget.CardView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginTop="20dp">
<Button
android:id="#+id/searchSchoolButtonID"
android:layout_width="200dp"
android:layout_height="60dp"
android:layout_marginLeft="60dp"
android:text="Search"
android:textColor="#ffff"
android:background="#color/colorPrimary"
android:textStyle="bold"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginLeft="10dp">
<android.support.v7.widget.CardView
android:layout_width="300dp"
android:layout_height="wrap_content">
<ListView
android:id="#+id/listOfSchoolsID"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="#android:color/transparent"
android:cacheColorHint="#color/ligtherDarkGrey"
android:divider="#CCCCCC"
android:dividerHeight="2dp"
android:paddingLeft="2dp" >
</ListView>
</android.support.v7.widget.CardView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:orientation="vertical">
<Button
android:id="#+id/openNewschoolID"
android:layout_width="200dp"
android:layout_height="60dp"
android:layout_marginLeft="60dp"
android:background="#color/colorPrimary"
android:text="Open New School"
android:textColor="#ffff"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:id="#+id/schoolSetupLayout"
android:visibility="invisible"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:orientation="vertical">
<TextView
android:id="#+id/schoolSetupText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="School Setup"
android:textSize="20dp"
android:layout_marginLeft="50dp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<EditText
android:id="#+id/classNameText"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="5"
android:hint="Class name, e.g Grade one" />
<Button
android:id="#+id/delete_button"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_weight="1"
android:background="#android:drawable/ic_delete"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center">
<Button
android:id="#+id/addNewClassButton"
android:layout_marginTop="15dp"
android:layout_marginLeft="50dp"
android:layout_width="100dp"
android:layout_height="50dp"
android:text="Add new class"
android:textColor="#ffff"
android:background="#color/colorPrimary"/>
<Button
android:id="#+id/nextButton"
android:layout_marginTop="25dp"
android:layout_marginLeft="8dp"
android:layout_width="100dp"
android:layout_height="50dp"
android:text="Next"
android:textColor="#ffff"
android:background="#color/green"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
</ScrollView>
</LinearLayout>
Here is the field.xml file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/schoolSetupLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<EditText
android:id="#+id/classNameText"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="5"
android:hint="Class name, e.g Grade one" />
<Button
android:id="#+id/delete_button"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_weight="1"
android:background="#android:drawable/ic_delete"/>
</LinearLayout>
</LinearLayout>

You either should add a clickListener on
View rowView = inflater.inflate(R.layout.field, null);
Or add android:onClick within an element of field.xml if you want some click event to happen on it.
initializeListenners(); is only called once, during the initial layout, not on dynamic view additions.

Implement OnClickListener for Field.xml button after you inflate that layout.
Here is example:
public void addNewClass(){
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.field, null);
final Button btnDelete = rowView.findViewById(R.id.delete_button);
btnDelete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// Your stuff
}
});
schoolSetupLayout.addView(rowView, schoolSetupLayout.getChildCount() -1);
}
Hope that help :)

Dynamically generated delete button does not respond to an OnclickListener(Android JAVA)

I created an app that dynamically adds an edittext field to the view by clicking an Add button and deletes it by clicking a delete button. I created a separate xml file called field.xml that is called up when a new edittext field is added to the view. But the delete button does not remove this edittext field when clicked. What am I missing in the code I have tried most options but to no avail.
Here is the main java file
SchoolSearchSetup.java
import android.content.Context;
import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.view.View;
import android.widget.Toast;
public class SchoolSearchSetup extends AppCompatActivity implements View.OnClickListener {
private EditText searchSchoolID;
private Button searchSchoolButtonID;
private ListView listOfSchoolsID;
private Button openNewschoolID;
private LinearLayout schoolSetupLayout;
private Button addNewClass;
private EditText classNameEditText;
private Button deleteButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_school_search_setup);
findAllViewsID();
initializeListenners();
}
public void findAllViewsID(){
classNameEditText = findViewById(R.id.classNameText);
addNewClass = findViewById(R.id.addNewClassButton);
schoolSetupLayout = findViewById(R.id.schoolSetupLayout);
searchSchoolID = findViewById(R.id.searchSchoolID);
searchSchoolButtonID = findViewById(R.id.searchSchoolButtonID);
listOfSchoolsID = findViewById(R.id.listOfSchoolsID);
openNewschoolID = findViewById(R.id.openNewschoolID);
deleteButton = findViewById(R.id.delete_button);
}
public void initializeListenners(){
openNewschoolID.setOnClickListener(SchoolSearchSetup.this);
addNewClass.setOnClickListener(SchoolSearchSetup.this);
deleteButton.setOnClickListener(SchoolSearchSetup.this);
}
public void addNewClass(){
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.field, null);
schoolSetupLayout.addView(rowView, schoolSetupLayout.getChildCount() -1);
}
#Override
public void onClick(View view) {
switch(view.getId()){
case R.id.openNewschoolID:
displaySchoolSetUpForms();
break;
case R.id.addNewClassButton:
addNewClass();
break;
case R.id.delete_button:
schoolSetupLayout.removeView((View) view.getParent());
}
}
private void displaySchoolSetUpForms() {
schoolSetupLayout.setVisibility(View.VISIBLE);
}
}
The main XML file
activity.school_search_setup.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context="com.example.demeainc.demea.MainActivity"
android:orientation="vertical"
android:background="#color/backgroundColor">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp">
<ImageView
android:id="#+id/backArrowClassView"
android:layout_width="30dp"
android:layout_height="30dp"
android:src="#drawable/ic_arrow_class"
android:layout_marginLeft="5dp"/>
</LinearLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_marginLeft="50dp"
android:text="Search your school."
android:gravity="center"
android:textSize="25dp" />
<android.support.v7.widget.CardView
android:foreground="?attr/selectableItemBackground"
android:clickable="true"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp">
<EditText
android:id="#+id/searchSchoolID"
android:layout_width="270dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:drawableLeft="#drawable/ic_search_black_24dp"
android:hint="Search"/>
</android.support.v7.widget.CardView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginTop="20dp">
<Button
android:id="#+id/searchSchoolButtonID"
android:layout_width="200dp"
android:layout_height="60dp"
android:layout_marginLeft="60dp"
android:text="Search"
android:textColor="#ffff"
android:background="#color/colorPrimary"
android:textStyle="bold"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginLeft="10dp">
<android.support.v7.widget.CardView
android:layout_width="300dp"
android:layout_height="wrap_content">
<ListView
android:id="#+id/listOfSchoolsID"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="#android:color/transparent"
android:cacheColorHint="#color/ligtherDarkGrey"
android:divider="#CCCCCC"
android:dividerHeight="2dp"
android:paddingLeft="2dp" >
</ListView>
</android.support.v7.widget.CardView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:orientation="vertical">
<Button
android:id="#+id/openNewschoolID"
android:layout_width="200dp"
android:layout_height="60dp"
android:layout_marginLeft="60dp"
android:background="#color/colorPrimary"
android:text="Open New School"
android:textColor="#ffff"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:id="#+id/schoolSetupLayout"
android:visibility="invisible"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:orientation="vertical">
<TextView
android:id="#+id/schoolSetupText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="School Setup"
android:textSize="20dp"
android:layout_marginLeft="50dp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<EditText
android:id="#+id/classNameText"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="5"
android:hint="Class name, e.g Grade one" />
<Button
android:id="#+id/delete_button"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_weight="1"
android:background="#android:drawable/ic_delete"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center">
<Button
android:id="#+id/addNewClassButton"
android:layout_marginTop="15dp"
android:layout_marginLeft="50dp"
android:layout_width="100dp"
android:layout_height="50dp"
android:text="Add new class"
android:textColor="#ffff"
android:background="#color/colorPrimary"/>
<Button
android:id="#+id/nextButton"
android:layout_marginTop="25dp"
android:layout_marginLeft="8dp"
android:layout_width="100dp"
android:layout_height="50dp"
android:text="Next"
android:textColor="#ffff"
android:background="#color/green"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
</ScrollView>
</LinearLayout>
Here is the Field.xml file for the edit text to be added. Both the field.xml and the activity.school_search_setup.xml share the same IDs.
Field.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/schoolSetupLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<EditText
android:id="#+id/classNameText"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="5"
android:hint="Class name, e.g Grade one" />
<Button
android:id="#+id/delete_button"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_weight="1"
android:background="#android:drawable/ic_delete"/>
</LinearLayout>
</LinearLayout>

Have you tried using
setVisibility(View.GONE);
Update:
Try this code block:
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
Button btn = new Button(this);
btn.setId(i);
final int id_ = btn.getId();
btn.setText("button " + id_);
btn.setBackgroundColor(Color.rgb(80, 80, 90));
linear.addView(btn, params);
btn1 = ((Button) findViewById(id_));
btn1.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Toast.makeText(view.getContext(),
"Button clicked index = " + id_, Toast.LENGTH_SHORT)
.show();
}
});

why cant I Update text dynamically in fragments?

Here's my Xml code
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:text="Well heres the secret !"
android:textAlignment="center"
android:textColor="#color/bluishblack"
android:textSize="25sp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:text="1. Secret is simple,the cards we showed you contained key numbers(very first number of the list)"
android:textAlignment="center"
android:textSize="23sp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="' 2 , 4 , 1 , 16 , 32 , 8 , 64 ' "
android:textAlignment="center"
android:textColor="#color/dgreen"
android:textSize="23sp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:text="2. Above are the key numbers. For every card that contains spectator's number you add key number(First number of card) of respective card. "
android:textAlignment="center"
android:textSize="23sp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:text="3. And thats how you Read People's mind ! As easy as that ! "
android:textAlignment="center"
android:textSize="23sp" />
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center">
<Button
android:id="#+id/play_again"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:onClick="playAgain"
android:text="Play again !"
android:textColor="#color/dgreen"
/>
</RelativeLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="150dp"
android:layout_marginBottom="8dp"
android:background="#drawable/googleg_standard_color_18" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:text="Your rating helps us to put more efforts i future devlopment,also we get to know more aboout your experiences and Views ! "
android:textAlignment="center"
android:textSize="20sp" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="99dp"
android:text="Rate now !" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Still Here? Do you want to amaze your friends and family.There are many awesome tricks which will blow away peoples mind yet so simple to do See below recommendations now "
android:textAlignment="center"
android:textSize="20sp"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:text="Do Want to amaze your Freinds !!"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="26sp" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="2dp"
android:layout_marginLeft="12dp"
android:layout_marginRight="12dp"
android:background="#android:color/darker_gray" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="6dp"
android:layout_marginTop="8dp"
android:text="Here are some of our Suggestions :- "
android:textColor="#color/colorPrimaryDark"
android:textSize="16sp" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="2dp"
android:layout_margin="8dp"
android:layout_marginLeft="12dp"
android:layout_marginRight="12dp"
android:background="#android:color/darker_gray" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="8dp"
android:text="Swipe to see more --->"
android:textAlignment="center"
android:textSize="22sp" />
</LinearLayout>
</RelativeLayout>
</ScrollView>
<android.support.v4.view.ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="500dp">
</android.support.v4.view.ViewPager>
</LinearLayout>
</ScrollView>
here's my java code of fragment
public class Fragment1 extends Fragment {
private TextView tv;
#Override public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
Intent n = new Intent(Intent.CATEGORY_BROWSABLE,Uri.parse("http://amzn.to/2rpR35P"));
ViewGroup rootView = (ViewGroup)inflater.inflate(R.layout.pager_layout, container, false);
tv = (TextView)rootView.findViewById(R.id.textDes);
tv.setText("text to set dynamically");
return inflater.inflate(R.layout.pager_layout, container, false);
}
}
Here's code for pager Adapter
public class PagerAdapter extends FragmentPagerAdapter {
public PagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
if (position == 0) {
return new Fragment1();
}
if (position == 1) {
return new Fragment2();
}
if (position == 2) {
return new Fragment3();
} else {
return new Fragment4();
}
}
#Override
public int getCount() {
return 4;
}
}
here's code for layout of pager
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="24dp"
>
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_icon"
android:id="#+id/image_book"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center"
android:text="This is description"
android:textSize="20sp"
android:id="#+id/textDes"
/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
>
<Button
android:id="#+id/getItNow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Start amazing your friends !"
android:textAlignment="center"
/>
</LinearLayout>
</LinearLayout>
How can i change text and images dynamically also i've three more fragments that use same layout(pager_layout) also can i add different intents or not?

You have to set text in your text view inside onViewCreated() method and not in onCreateView() in your fragment class:
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.pager_layout, container, false);
return view;
}
TextView tv;
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
tv = (TextView) view.findViewById(R.id.textDes);
tv.setText("text to set dynamically");
...
}

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