I want to show two splash screens one by one. First to be aways static second will be change every time when user login. I do my second splash screen to change every time, but I dont know how to set a first static splash screen.
This is my .java file
import java.util.Random;
import java.util.Timer;
import java.util.TimerTask;
import android.os.Bundle;
import android.widget.ImageView;
import android.app.Activity;
import android.content.Intent;
public class SplashScreen extends DefaultActivity {
int timeout = 2000; // Choose the delay (1000 = 1 second)
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
setFonts();
// Randomise a background
int[] yourListOfImages= {R.drawable.test, R.drawable.test1, R.drawable.test2, R.drawable.test3};
Random random = new Random(System.currentTimeMillis());
int posOfImage = random.nextInt(yourListOfImages.length);
ImageView imageView= (ImageView) findViewById(R.id.imageView1);
imageView.setBackgroundResource(yourListOfImages[posOfImage]);
Timer timer = new Timer();
timer.schedule(new TimerTask() {
#Override
public void run() {
//Redirecting to the home page
Intent redirect = new Intent(getApplicationContext(), LoginActivity.class);
startActivity(redirect);
finish();
}
}, timeout);
}
}
and this is .xml fail
<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/root"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context=".SplashScreen" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:contentDescription="#string/contentDescription"
android:background="#android:color/white" />
<ImageView
android:id="#+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:contentDescription="#string/contentDescription"
android:background="#android:color/white" />
<TextView
android:id="#+id/textViewSplash"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/imageView1"
android:layout_centerHorizontal="true"
android:layout_marginBottom="45dp"
android:textColor="#FFFFFF"
android:textSize="25sp"
android:tag="helvetica"
android:text="#string/splash_intro" />
</RelativeLayout>
Related
I am creating my first app which is when I press a button I simply move to the next page, but every time I press the button my app crashes (Ignore the username and password texts they don't do anything yet). I am trying to move from login to home page.
activity_login.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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="match_parent"
android:background="#drawable/gradient"
tools:context=".Login">
<ImageView
android:id="#+id/imageView"
android:layout_width="120dp"
android:layout_height="150dp"
android:layout_marginTop="59dp"
app:srcCompat="#drawable/logo"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<EditText
android:id="#+id/username"
android:layout_width="200dp"
android:layout_height="40dp"
android:layout_below="#+id/imageView"
android:layout_centerHorizontal="true"
android:layout_marginTop="100dp"
android:background="#11000000"
android:drawableLeft="#drawable/ic_action_user"
android:ems="10"
android:hint="Username"
android:inputType="textPersonName"
android:textSize="16dp" />
<EditText
android:id="#+id/password"
android:layout_width="200dp"
android:layout_height="40dp"
android:layout_below="#id/username"
android:layout_alignStart="#id/username"
android:layout_alignLeft="#id/username"
android:layout_marginTop="38dp"
android:background="#11000000"
android:drawableLeft="#drawable/ic_action_pass"
android:ems="10"
android:hint="Password"
android:inputType="textPersonName"
android:textSize="16sp" />
<Button
android:id="#+id/login"
android:layout_width="321dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="207dp"
android:background="#color/colorAccent"
android:onClick="loginButton"
android:text="Login" />
<TextView
android:id="#+id/register"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="139dp"
android:text="Register Here"
android:textColor="#fff"
android:textSize="14sp" />
<TextView
android:id="#+id/attempts"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="74dp"
android:text="Incorrect Attempts: "
android:textColor="#fff"
android:textSize="14sp" />
</RelativeLayout>
Login.java
package com.example.chorehelpers;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import androidx.appcompat.app.AppCompatActivity;
public class Login extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
}
public void onClick (View v){
switch (v.getId()){
case R.id.login:
loginButton(v);
break;
}
}
public void loginButton(View v) {
Intent i = new Intent (Login.this, HomePage.class);
startActivity(i);
}
}
activity_home_page.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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="match_parent"
android:background="#drawable/gradient"
tools:context=".HomePage">
</RelativeLayout>
HomePage.java
package com.example.chorehelpers;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
public class HomePage extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home_page);
}
}
Please Help.
why are u using this method
public void onClick (View v){
switch (v.getId()){
case R.id.login:
loginButton(v);
break;
}
remove it and rerun the app , Hope it woks
**Please try to update Login.java class like this,**
package com.example.chorehelpers;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import androidx.appcompat.app.AppCompatActivity;
public class Login extends AppCompatActivity {
private Button loginButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
loginButton = (Button) findViewById(R.id.login);
loginButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent x = new Intent(LoginActivity.this, HomePageActivity.class);
startActivity(x);
}
});
}
}
I want to get the username from edit text and display it in the second Activity in TextView id-textView2. When I press enter after writing the name and click start button it goes to the second activity but the text is not being displayed . I tried executing other actions like startActivity() inside onEditorAction method it works after i press enter, but this code is not working
String name = nameText.getText().toString();
Intent p1 = new Intent(MainActivity.this, qPage1.class);
p1.putExtra("user_name",name);
Is it because i declared two times intent, inside onEditorAction() and inside starQuizz method in Activity A. i did this because of scope issues.
Activity A
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.content.Intent;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import android.widget.TextView;
import android.view.KeyEvent;
import android.widget.TextView.OnEditorActionListener;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final EditText nameText = findViewById(R.id.nameText);
nameText.setOnEditorActionListener(new OnEditorActionListener() {
#Override
public boolean onEditorAction(TextView nameText, int actionId, KeyEvent event) {
boolean handled = false;
if (actionId == EditorInfo.IME_ACTION_SEND || event.getKeyCode() == KeyEvent.KEYCODE_ENTER && event.getAction() == KeyEvent.ACTION_DOWN) {
String name = nameText.getText().toString();
Intent p1 = new Intent(MainActivity.this, qPage1.class);
p1.putExtra("user_name",name);
handled = true;
}
return handled;
}
});
}
//OnClick of a Start button
public void startQuizz(View view){
Intent p1 = new Intent(this, qPage1.class);
startActivity(p1);
}
}
Activity A xml layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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="match_parent"
android:background="#drawable/beautifulcolorgradientsbackgrounds091eternalconstance"
tools:context=".MainActivity">
<EditText
android:id="#+id/nameText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="181dp"
android:width="300dp"
android:hint="#string/name_input"
android:inputType="text"
android:imeOptions="actionSend"
android:imeActionId="10"/>
<Button
android:id="#+id/start_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="182dp"
android:onClick="startQuizz"
android:text="START" />
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="45dp"
android:fontFamily="#font/changa_one"
android:text="Are you up for the challenge?"
android:textAlignment="center"
android:textAllCaps="false"
android:textSize="30sp" />
</RelativeLayout>
Activity 2
package com.guesstasif.guesswhat;
import android.content.Intent;
import android.provider.Settings;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ProgressBar;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.view.View;
import android.widget.TextView;
public class qPage1 extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_q_page1);
final ProgressBar p1progress = findViewById(R.id.pg1progressBar);
Runnable r = new Runnable() {
#Override
public void run() {
int progressStatus = 0;
while (progressStatus<200){
p1progress.incrementProgressBy(1);
android.os.SystemClock.sleep(50);
progressStatus++;
}
RadioButton q1radiobutton3 = findViewById(R.id.q1radioButton3);
RadioButton q2radiobutton1 = findViewById(R.id.q2radioButton1);
Intent p2 = new Intent(qPage1.this, qPage2.class);
//name==============================================================
String name = getIntent().getStringExtra("user_name");
TextView textView2= findViewById(R.id.textView2);
textView2.setText(name);
//==================================================================
if(q1radiobutton3.isChecked() && q2radiobutton1.isChecked())
{
p2.putExtra("intVariableName", 2);
}
else if (q1radiobutton3.isChecked() || q2radiobutton1.isChecked())
{
p2.putExtra("intVariableName", 1);
}
startActivity(p2);
}
};
Thread progressThread =new Thread(r);
progressThread.start();
}
}
Activity 2 xml layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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="match_parent"
tools:context=".qPage1">
<TextView
android:id="#+id/q1textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:text="Q1.What is the name of the 7th planet of ou Solar system?"
android:textAlignment="center"
android:textSize="24sp" />
<RadioGroup
android:id="#+id/q1radioGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/q1textView"
android:layout_centerHorizontal="true"
android:orientation="horizontal">
<RadioButton
android:id="#+id/q1radioButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Jupiter" />
<RadioButton
android:id="#+id/q1radioButton2"
android:layout_width="84dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Saturn" />
<RadioButton
android:id="#+id/q1radioButton3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Uranus" />
<RadioButton
android:id="#+id/q1radioButton4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Neptune" />
</RadioGroup>
//second Question//
<TextView
android:id="#+id/q2textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginTop="173dp"
android:text="Q2.What is the name of the largest tree in the world?"
android:textAlignment="center"
android:textSize="24sp" />
<RadioGroup
android:id="#+id/q2radioGroup"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_alignParentStart="true"
android:layout_below="#+id/q2textView">
<RadioButton
android:id="#+id/q2radioButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="General Sherman" />
<RadioButton
android:id="#+id/q2radioButton2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Sequoia sempervirens" />
<RadioButton
android:id="#+id/q2radioButton3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Centurion" />
<RadioButton
android:id="#+id/q2radioButton4"
android:layout_width="wrap_content"
android:layout_height="35dp"
android:layout_weight="1"
android:text="Coast redwood" />
</RadioGroup>
<ProgressBar
android:id="#+id/pg1progressBar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="33dp"
android:max="200" />
<TextView
android:id="#+id/scoreView"
android:layout_width="170dp"
android:layout_height="41dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="89dp" />
<TextView
android:id="#+id/textView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="137dp"
android:textAlignment="center" />
</RelativeLayout>
The reason is you start a new Intent in here:
public void startQuizz(View view){
Intent p1 = new Intent(this, qPage1.class);
startActivity(p1);
}
Which does not pass the string and just starts a new Intent-Activity.
Also here:
Intent p1 = new Intent(MainActivity.this, qPage1.class);
p1.putExtra("user_name",name);
You missed to start Intent so:
Intent p1 = new Intent(MainActivity.this, qPage1.class);
p1.putExtra("user_name",name);
startActivity(p1);
And in the quiz method, start another Intent:
Intent intent = new Intent(this, SecondActivity.class);
startActivity(intent);
And finally, in the second Activity:
Bundle bundle = getIntent().getExtras();
String name = bundle.getString("user_name");
Also, you were using Thread instead of runOnUIThread(); and that might cause some UI effects.
Look at the startQuizz method - seems like you are not setting the name as an extra to the intent!
You should use a single function that starts the next activity both in the editor action and the button click listener.
It seems you are setting text of a TextView in a background thread.
The UI cannot be altered in a background thread.
Try wrapping the setText() part in runOnUiThread().
Check this out: How do we use runOnUiThread in Android?
I'll answer the most obvious question here. It seems there's a lot of code work being done, here also.
EditText edittext = (EditText) findViewById(R.id.something);
You must, and I cannot stress this enough, as of Level 30, still, you have to cast it as an EditText. In fact, you have to with everything, essentially. Java doesn't like structural propagating without being handed the stalk, not the beans (seeds). So, please one last thing:
String string = edittext.getText().toString()
That works every time in this combination!
This question already has answers here:
Unfortunately MyApp has stopped. How can I solve this?
(23 answers)
Closed 4 years ago.
I am trying to get an input from user and then covert it into double and divide it by 1000 and then set the value in a textview but i while running the app, the app closes and says Unfortunately the app has stopped.
Here's my MainActivity.java file :
package com.blogspot.techtutorialsajen.androiddevelopmentpractice;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity{
private Button btn1;
private EditText get;
private TextView result;
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1 = (Button)findViewById(R.id.btn1);
result = (TextView)findViewById(R.id.result);
get = (EditText)findViewById(R.id.get);
final double value = Double.parseDouble(get.getText().toString()) / 1000;
btn1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
result.setText(String.valueOf(value));
}
});
}
}
And My activity_main.xml file :
?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">
<EditText
android:id="#+id/get"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:hint="#string/enter_a_number"
android:layout_marginTop="48dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<Button
android:id="#+id/btn1"
android:text="#string/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/result"
android:layout_centerHorizontal="true"
android:layout_marginBottom="28dp" />
<TextView
android:id="#+id/result"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:textSize="20pt"
android:text="0"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
Well, Your app is crashes because of java.lang.RuntimeException:java.lang.NumberFormatException: Invalid double: ""
that means you are trying to convert empty string to Double.
So, Because the EditText is empty your app is crashes and I have re-write your code so that you can copy-paste.
Here is your MainActivity.Java
package com.blogspot.techtutorialsajen.androiddevelopmentpractice;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity{
private Button btn1;
private EditText get;
private TextView result;
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1 = (Button)findViewById(R.id.btn1);
result = (TextView)findViewById(R.id.result);
get = (EditText)findViewById(R.id.get);
btn1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (get.getText().toString().isEmpty()) {
Toast.makeText(MainActivity .this, "Please input something", Toast.LENGTH_LONG).show();
} else {
final double value = Double.parseDouble(get.getText().toString()) / 1000;
result.setText(String.valueOf(value));
}
}
});
}
}
and here is your activity_main.XML
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">
<EditText
android:id="#+id/get"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:hint="#string/enter_a_number"
android:layout_marginTop="48dp"
android:inputType="number"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<Button
android:id="#+id/btn1"
android:text="#string/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/result"
android:layout_centerHorizontal="true"
android:layout_marginBottom="28dp" />
<TextView
android:id="#+id/result"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:textSize="20pt"
android:text="0"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
I have added android:inputType="number" property to your EditText so that, now on, it will only take Number from the user.
From your xml file and activity code, it clearly says your edittext is empty while launching app.
And you are using this code in oncreate()
final double value = Double.parseDouble(get.getText().toString()) / 1000;
which throws java.lang.NumberFormatException: empty String
You can change your code like,
btn1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(!get.getText().toString().isEmpty)
final double value = Double.parseDouble(get.getText().toString()) / 1000;
result.setText(String.valueOf(value));
}
});
}
I honestly do not know what is wrong with my code. I have searched for answers here and have done everything and i simply cannot tell what is wrong, Please help?
This is my MainActivity.java,
package com.example.myname.easternmusic;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import java.util.Timer;
import java.util.TimerTask;
public class MainActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
TimerTask task=new TimerTask() {
#Override
public void run() {
finish();
startActivity(new Intent(MainActivity.this, Main.class));
}
};
Timer opening=new Timer();
opening.schedule(task,5000);
}
}
My splash.xml which is the layout for the MainActivity.java
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Sounds of the East"
android:id="#+id/textView"
android:layout_alignParentTop="true"
android:textSize="20dp"
android:textColor="#000000"
android:textStyle="bold"
android:gravity="center_horizontal"
android:background="#drawable/bell"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:layout_alignParentEnd="true" />
My Main.java which is the extra class I created for the main_activity.xml file
package com.example.myname.easternmusic;
import android.app.Activity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
public class Main extends Activity {
Button btBamboo, btPalace;
MediaPlayer mpBamboo, mpPalace;
int playing;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImageView imageView=(ImageView)findViewById(R.id.imageView);
ImageView imageView1=(ImageView)findViewById(R.id.imageView2);
btBamboo=(Button)findViewById(R.id.button1);
btPalace=(Button)findViewById(R.id.button2);
btBamboo.setOnClickListener(bBamboo);
btPalace.setOnClickListener(bPalace);
mpBamboo=new MediaPlayer();
mpBamboo=MediaPlayer.create(this,R.raw.bamboo);
mpPalace=new MediaPlayer();
mpPalace=MediaPlayer.create(this,R.raw.palace);
playing=0;
}
Button.OnClickListener bBamboo=new Button.OnClickListener(){
#Override
public void onClick(View v) {
switch (playing){
case 0:
mpBamboo.start();
playing=1;
btBamboo.setText("Pause Bamboo Song");
btPalace.setVisibility(View.INVISIBLE);
break;
case 1:
mpBamboo.pause();
playing=0;
btBamboo.setText("Play Bamboo Song");
btPalace.setVisibility(View.VISIBLE);
break;
}
}
};
Button.OnClickListener bPalace=new Button.OnClickListener(){
#Override
public void onClick(View v) {
switch (playing){
case 0:
mpPalace.start();
playing=1;
btPalace.setText("Pause Palace Song");
btBamboo.setVisibility(View.INVISIBLE);
break;
case 1:
mpPalace.pause();
playing=0;
btPalace.setText("Play Palace Song");
btBamboo.setVisibility(View.VISIBLE);
break;
}
}
};
}
and finally, the activity_main.xml file
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin" tools:context=".Splash">
<ImageView
android:layout_width="320dp"
android:layout_height="150dp"
android:id="#+id/imageView"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:src="#drawable/band" />
<Button
android:layout_width="320dp"
android:layout_height="wrap_content"
android:text="Play Bamboo Song"
android:id="#+id/button1"
android:layout_below="#+id/imageView"
android:layout_centerHorizontal="true"
android:textSize="22dp"
android:layout_marginBottom="10dp" />
<ImageView
android:layout_width="320dp"
android:layout_height="150dp"
android:id="#+id/imageView2"
android:layout_below="#+id/button1"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:src="#drawable/drums" />
<Button
android:layout_width="320dp"
android:layout_height="wrap_content"
android:text="Play Palace Song"
android:id="#+id/button2"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:textSize="22dp"
android:layout_marginBottom="10dp"
android:layout_alignParentStart="false" />
When the app is run, it should pull up a splash screen with the splash layout for five seconds, and then display the activity_main layout, but it stops right after it switches screens. Please help.
write
startActivity(new Intent(MainActivity.this, Main.class));
then write
finish();
here You first finish your activity and after that you are try to call that activity. That is not possible.
I am creating an android app, I won't to navigate from "test1" to "test2" but when I press "btnNext" nothing happens. I am using the same code that I used for other navigations within my app so I don't understand why it won't work. Can someone help please?
"test1" xml code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/txtSubTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/txtTitle"
android:layout_centerHorizontal="true"
android:text="Please Answer the 9 Following Questions"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/txtTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="37dp"
android:text="Depression Test"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="#+id/txtQ1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/txtSubTitle"
android:layout_centerHorizontal="true"
android:layout_marginTop="59dp"
android:text="Q.1. Have you found little pleasure or interest in doing things?"
android:textAppearance="?android:attr/textAppearanceLarge" />
<RadioButton
android:id="#+id/RadioButton01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/txtQ1"
android:layout_below="#+id/radioButton1"
android:text="On some days" />
<RadioButton
android:id="#+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/txtQ1"
android:layout_below="#+id/txtQ1"
android:text="No, not at all" />
<RadioButton
android:id="#+id/RadioButton02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/RadioButton01"
android:layout_below="#+id/RadioButton01"
android:text="On more than half the days" />
<RadioButton
android:id="#+id/RadioButton03"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/RadioButton02"
android:layout_below="#+id/RadioButton02"
android:text="Nearly every day" />
<Button
android:id="#+id/btnNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="26dp"
android:layout_toRightOf="#+id/txtQ1"
android:text="Next" />
<Button
android:id="#+id/btnNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/RadioButton03"
android:layout_marginTop="14dp"
android:layout_toRightOf="#+id/txtTitle"
android:text="Next" />
</RelativeLayout>
"Test1.java" code:
package com.lifematters;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.View;
import android.widget.Button;
public class Test1 extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test1);
//define Navigation Image Buttons
final Button nextBtn = (Button) findViewById(R.id.btnNext);
//Set up listener for Test
nextBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//listener call this function
openTest2();
}
});
}
//Open test page
public void openTest2() {
//create new textview
Intent i = new Intent(getApplicationContext(), Test2.class);
startActivity(i);
}
}
"Test2.java" code:
package com.lifematters;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.View;
import android.widget.Button;
public class Test2 extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test2);
//define Navigation Image Buttons
final Button nextBtn = (Button) findViewById(R.id.btnNext);
//Set up listener for Test
nextBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//listener call this function
openTest3();
}
});
}
//Open test page
public void openTest3() {
//create new textview
Intent i = new Intent(getApplicationContext(), Test3.class);
startActivity(i);
}
}
I have declared the activities in the Android Manifest and I am getting zero errors in my log cat.
You have two buttons named "btnNext". That's why it doesn't work.
Double check this:
"#+id/btnNext"
You have the same id set twice...
Change buttons code in xml to this
<Button
android:id="#+id/btnNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="26dp"
android:layout_toRightOf="#+id/txtQ1"
android:text="Next" />
<Button
android:id="#+id/btnNext1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/RadioButton03"
android:layout_marginTop="14dp"
android:layout_toRightOf="#+id/txtTitle"
android:text="Next" />
you are having problem because you are calling button with wrong id. check your button id's in test2.xm as well. it will run then