So I've managed to get a button to open a pdf file using an intent, however when i run the app and press the button it says "Cannot display PDF". Can anyone help me out as to where exactly the code goes wrong?
Here is the my activity:
package com.example.android.practiceapp;
import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.Button;
import java.io.File;
public class promotions extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_promotions);
final Button button = (Button) findViewById(R.id.earlybird);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v){
File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/pictures/Early_Bird_Bonus_Rules");
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
Intent intent1 = Intent.createChooser(intent, "Open With");
try {
startActivity(intent1);
} catch (ActivityNotFoundException e) {
// Instruct the user to install a PDF reader here, or something
}
}
});
}
}
Related
I am working on an Android app android 10 and nordic nrf52840 which is advertising at channel 37,38,39 I want to get the manufacturer data from my nordic bluetooth device. Like the picture shown below. Now I can scan and find my device, but I don't know how to get manufacturer data.
package com.example.test373839;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.BatchingListUpdateCallback;
import android.Manifest;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
private BluetoothAdapter mBluetoothAdapter=null;
private BluetoothManager mbluetoothManager=null;
private BroadcastReceiver mReceiver=null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btnScan=(Button)findViewById(R.id.button);
mBluetoothAdapter=BluetoothAdapter.getDefaultAdapter();
}
public void StartScan(View view) {
Log.d("Button","click");
checkBTPermission();
mBluetoothAdapter.startDiscovery();
IntentFilter dicoveryDeviceIntent=new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(mBroadcastreceiver,dicoveryDeviceIntent);
}
private void checkBTPermission(){
if(Build.VERSION.SDK_INT>Build.VERSION_CODES.LOLLIPOP){
int pc=this.checkSelfPermission("Manifest.permission.ACCESS_FINE_LOCATION");
pc+=this.checkSelfPermission("Manifest.permission.ACCESS_COARSE_LOCATION");
if(pc!=0){
this.requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.ACCESS_COARSE_LOCATION},1001);
}else {
Log.d("Bluetooth","checkBT permission");
}
}
}
final private BroadcastReceiver mBroadcastreceiver=new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
//Finding devices
if (BluetoothDevice.ACTION_FOUND.equals(action))
{
// Get the BluetoothDevice object from the Intent
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
// Add the name and address to an array adapter to show in a ListView
Log.d("Bluetooth",device.getAddress()+":"+device.getName());
}
}
};
}
I have an issue with my app that i cant solve. The app takes the input(reminder) from a user and then sets it as a notification. The user can create as many notifications as he/she likes. I want the user to click the notification and get taken to a new activity(Reminder), so he/she can see the reminder in a TextView. So i have an activity(SetReminder), which let the user put his data in a text editor.Then i save his data in a hashMap. The int is the id of user's string data. Then i have a class (AlarmReceiver) which extends BroacastReceiver and generates the notification.In this class i have an id for each notification,which matches the hashMap's int from the SetReminder activity. That way i was expecting that the user would see the data of each notification.But that's doesn't happen. I have multiple Notifications(i want that), but the user sees the data of the last notification, no matter which notifications selects. I am posting the code from the three activities.
Thanks in advance.
SetReminder.class
package demo.push_not_demo;
import android.graphics.PorterDuff;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.SystemClock;
import android.widget.EditText;
import com.kunzisoft.switchdatetime.SwitchDateTimeDialogFragment;
import java.util.HashMap;
public class SetReminder extends AppCompatActivity {
private SwitchDateTimeDialogFragment dateTimeFragment;
Button b1,b2,b3;
EditText editText;
public static int counter=0;
public static HashMap<Integer,String> hashMap;
private static final String TAG_DATETIME_FRAGMENT = "TAG_DATETIME_FRAGMENT";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.set_reminder);
hashMap= new HashMap<Integer, String>();
b1=(Button) findViewById(R.id.set_date_time);
b2=(Button) findViewById(R.id.cancel);
b3=(Button) findViewById(R.id.save);
b1.setOnTouchListener(touch);
b2.setOnTouchListener(touch);
b3.setOnTouchListener(touch);
editText=(EditText) findViewById(R.id.reminder_edit);
}
View.OnTouchListener touch= new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
switch (v.getId()){
case R.id.set_date_time:
if (event.getAction()==MotionEvent.ACTION_DOWN){
v.getBackground().setColorFilter(0x77000000, PorterDuff.Mode.SRC_ATOP);
v.invalidate();
}
else if (event.getAction()== MotionEvent.ACTION_UP){
v.getBackground().clearColorFilter();
v.invalidate();
// Construct SwitchDateTimePicker
dateTimeFragment = (SwitchDateTimeDialogFragment) getSupportFragmentManager().findFragmentByTag(TAG_DATETIME_FRAGMENT);
if(dateTimeFragment == null) {
dateTimeFragment = SwitchDateTimeDialogFragment.newInstance(
getString(R.string.label_datetime_dialog),
getString(R.string.positive_button_datetime_picker),
getString(R.string.negative_button_datetime_picker)
);
}
dateTimeFragment.show(getSupportFragmentManager(), TAG_DATETIME_FRAGMENT);
}
break;
case R.id.cancel:
if (event.getAction()==MotionEvent.ACTION_DOWN){
v.getBackground().setColorFilter(0x77000000, PorterDuff.Mode.SRC_ATOP);
v.invalidate();
cancelalarm();
}
else if (event.getAction()== MotionEvent.ACTION_UP){
v.getBackground().clearColorFilter();
v.invalidate();
Intent intent = new Intent(SetReminder.this,HomeScreen.class);
startActivity(intent);
}
break;
case R.id.save:
if (event.getAction()==MotionEvent.ACTION_DOWN){
v.getBackground().setColorFilter(0x77000000, PorterDuff.Mode.SRC_ATOP);
v.invalidate();
}
else if (event.getAction()== MotionEvent.ACTION_UP){
v.getBackground().clearColorFilter();
v.invalidate();
counter++;
hashMap.put(counter,editText.getText().toString());
alarmservice();
}
break;
}
return false;
}
};
public void alarmservice(){
Intent intent = new Intent(this,AlertReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this,0,intent,PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(alarmManager.ELAPSED_REALTIME_WAKEUP,SystemClock.elapsedRealtime()+ 5000,pendingIntent);
}
public void cancelalarm(){
Intent intent = new Intent(this,AlertReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this,0,intent,PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.cancel(pendingIntent);
}
}
AlertReceiver.class
package demo.push_not_demo;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.support.v4.app.NotificationCompat;
import android.widget.EditText;
import java.util.HashMap;
import static android.support.v4.app.NotificationCompat.DEFAULT_SOUND;
import static android.support.v4.app.NotificationCompat.PRIORITY_HIGH;
import static android.support.v4.app.NotificationCompat.VISIBILITY_PUBLIC;
public class AlertReceiver extends BroadcastReceiver {
public static int id=0;
#Override
public void onReceive(Context context, Intent intent) {
id++;
createNotification(context);
}
private void createNotification(Context context) {
NotificationCompat.Builder notification = new NotificationCompat.Builder(context)
.setAutoCancel(true)
.setSmallIcon(R.drawable.offer1)
.setContentTitle("Notification Title")
.setContentText("Tap to see your reminder")
.setPriority(PRIORITY_HIGH)
.setVibrate(new long[] { 50, 1000, 500, 1000, 1000 })
.setDefaults(DEFAULT_SOUND)
.setVisibility(VISIBILITY_PUBLIC);
Intent intent = new Intent(context,Reminder.class);
PendingIntent pendingintent = PendingIntent.getActivity(context,id,intent,PendingIntent.FLAG_ONE_SHOT);
notification.setContentIntent(pendingintent);
NotificationManager nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification ntfc = notification.build();
nm.notify(id,ntfc);
}
}
Reminder.class
package demo.push_not_demo;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;
import static demo.push_not_demo.AlertReceiver.id;
import static demo.push_not_demo.SetReminder.hashMap;
public class Reminder extends AppCompatActivity{
TextView txtv;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.reminder);
txtv=(TextView) findViewById(R.id.reminder_textView);
txtv.setText(hashMap.get(id));
}
}
dont use static id,in your code id is always 0. you can check it using Log!
use another way for produce different ids.
when you add notification with same id, the new notification will replace with last notification. use random integer for id
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 8 years ago.
Improve this question
I missed 2 }'s and I put them at the end but I'm getting an error in instagram, I tried them in many places, no use, can anyone know?
package com.example.a;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Bundle;
import android.widget.Button;
import android.view.View;
import android.view.View.OnClickListener;
public class MainActivity extends Activity {
Button dadclink;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addListenerOnButton();
}
public void addListenerOnButton() {
dadclink = (Button) findViewById(R.id.dadclink);
dadclink.setOnClickListener(new OnClickListener() {
#SuppressWarnings("unused")
public Intent newInstagramProfileIntent(PackageManager pm, String url) {
Intent intent = new Intent(Intent.ACTION_VIEW);
Uri uri = Uri.parse("http://instagram.com/mzcoco2you");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
}
};
......................
You missed a "}" and ")", add them like that:
public class MainActivity extends Activity {
Button dadclink;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addListenerOnButton();
}
public void addListenerOnButton() {
dadclink = (Button) findViewById(R.id.dadclink);
dadclink.setOnClickListener(new OnClickListener() {
#SuppressWarnings("unused")
public Intent newInstagramProfileIntent(PackageManager pm, String url) {
Intent intent = new Intent(Intent.ACTION_VIEW);
Uri uri = Uri.parse("http://instagram.com/mzcoco2you");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
}
});
}
}
I have a button link to facebook account but it connect to Google browser in my mobile (as shown) but I don't want that, I want it to take me to facebook application in my mobile and if it doesn't exist, it takes me to Google play application to download/install facebook, does anybody know how?
package com.el.dom;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.widget.Button;
import android.view.View;
import android.view.View.OnClickListener;
public class PageAb extends Activity {
Button dclink;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.ab);
addListenerOnButton();
}
public void addListenerOnButton() {
dclink= (Button) findViewById(R.id.dctec);
dclink.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("https://www.facebook.com/blah"));
startActivity(browserIntent);
}
});
}
}
use android facebook sdk create an app at http://developers.facebook.com/ and proceed
try {
//try to open page in facebook native app.
String uri = "fb://page/" + yourFBpageId; //Cutsom URL
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(uri));
startActivity(intent);
}
catch (ActivityNotFoundException ex){
//facebook native app isn't available, use browser.
String uri = "http://touch.facebook.com/pages/x/" + yourFBpageId; //Normal URL
Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(uriMobile));
startActivity(i);
}
copied from How to navigate user to a facebook page via Android's facebook api?
I need to create Service in my application for showing notifications. I have the code for service:
package com.bba.droid;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.IBinder;
public class AlertsMonitorService extends Service{
#Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
#Override
public void onCreate() {
super.onCreate();
}
#Override
public void onStart(Intent intent, int id) {
NotificationManager notifyMngr=(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification=new Notification(R.drawable.icon_back, "Downloading...", System.currentTimeMillis());
PendingIntent contentIntent = PendingIntent.getActivity(this.getApplicationContext(), 0, null, 0);
notification.setLatestEventInfo(this.getApplicationContext(), "YoutubeDownloader", "The video is downloading...", contentIntent);
notifyMngr.notify(0, notification);
}
}
And I have code for main Activity:
package com.bba.droid;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
public class DroidTestActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Intent service=new Intent();
service.setClass(this, AlertsMonitorService.class);
this.startService(service);
}
}
But service doesn't create a notification in status bar. Where have I made mistake?
I don't know if this is the only problem, but you are specifying null for the activity in your intent:
PendingIntent contentIntent = PendingIntent.getActivity(this.getApplicationContext(), 0, null, 0);
You want to specify an intent that will launch your activity:
Intent intent = new Intent(this, DroidTestActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this.getApplicationContext(), 0, intent, 0);