问题
With a mouse click, you implement two things:
- Sound is playing
- The GIF image is showing
I'm trying to show the GIF on the screen even when I close the app I'm using the services but because the sound keeps playing while the GIF image appears, I can not find the solution.
TheService.java (CODE)
package gallery.suitapps.catwalking;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.media.MediaPlayer;
import android.media.SoundPool;
import android.os.Build;
import android.os.IBinder;
import android.provider.Settings;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;
import pl.droidsonroids.gif.GifImageView;
public class TheService extends Service {
final class MyThreadClass implements Runnable{
int service_id;
MyThreadClass(int service_id){
this.service_id=service_id;
}
@Override
public void run() {
}
}
SoundPool soundPool = null;
private int[] f10685s;
MainActivity main = new MainActivity();
public MediaPlayer player;
Context context;
@Override
public void onCreate() {
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Toast.makeText(this,"Service Starts" , Toast.LENGTH_SHORT).show();
player = MediaPlayer.create(this,R.raw.sound2);
player.setLooping(true);
player.start();
MainActivity.imageView.setImageResource(R.drawable.cat_gif);
return START_STICKY;
}
@Override
public void onDestroy() {
Toast.makeText(this,"Service Stops" , Toast.LENGTH_SHORT).show();
player.stop();
MainActivity.imageView.setImageResource(R.drawable.ic_launcher_background);
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
MainActivity.java (CODE)
package gallery.suitapps.catwalking;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import pl.droidsonroids.gif.GifImageView;
public class MainActivity extends AppCompatActivity {
public static GifImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = findViewById(R.id.catgif);
}
public void startService (View view){
Intent intent = new Intent(this,TheService.class);
startService(intent);
// imageView.setImageResource(R.drawable.cat_gif);
}
public void stopService (View view){
Intent intent = new Intent(this,TheService.class);
stopService(intent);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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=".MainActivity">
<Button
android:id="@+id/startService"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Start Service"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.134"
android:onClick="startService"/>
<Button
android:id="@+id/stopService"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Stop Service"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.502"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.362"
android:onClick="stopService"/>
<pl.droidsonroids.gif.GifImageView
android:id="@+id/catgif"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/ic_launcher_background"
android:background="@android:color/holo_blue_dark"
/>
</android.support.constraint.ConstraintLayout>
回答1:
According to your requirement you need to implement system window alert in service class to show image in background when the app is closed
This is the solution for your requirement.
In manifest add this
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
Then in your launcher activity or any base activity add these permissions
private static final int CODE_DRAW_OVER_OTHER_APP_PERMISSION = 2084;
In onCreate() add this
if (SDK_INT >= Build.VERSION_CODES.M && !Settings.canDrawOverlays(this)) {
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + getPackageName()));
startActivityForResult(intent, CODE_DRAW_OVER_OTHER_APP_PERMISSION);
//finish();
}
Handle the request permission
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CODE_DRAW_OVER_OTHER_APP_PERMISSION) {
if (SDK_INT >= Build.VERSION_CODES.M && !Settings.canDrawOverlays(this)) {
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + getPackageName()));
startActivityForResult(intent, CODE_DRAW_OVER_OTHER_APP_PERMISSION);
} else {
// do stuff here
}
}
}
and do this in service class check the link below and do your stuff respectively
https://medium.com/@kevalpatel2106/create-chat-heads-like-facebook-messenger-32f7f1a62064
where image_layout. xml is
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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=".MainActivity">
<pl.droidsonroids.gif.GifImageView
android:id="@+id/catgif"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/ic_launcher_background"
android:background="@android:color/holo_blue_dark"
/>
</android.support.constraint.ConstraintLayout>
Update:- You can make changed in image_layout file to show your GIF any size and gravity in the screen You can make changes with
android:layout_width="any_size"
android:layout_height="any_size"
来源：https://stackoverflow.com/questions/52381137/i-want-to-show-gif-image-show-on-screen-even-when-app-is-closed