[?] Android app, change device background wallpaper

[mindux9]

Kodėl man instaliavus šį app'są ir perkrovus įrenginį, ekrano paveikslėlis nepasikeičia? Rankiniu būdu paleidus tą programą, paveikslėlis, pasikeičia, po to per nustatymus pakeičiau paveikslėlį į ankstesnį. Perkraunu įrenginį ir tada automatiškai pasikeičia kaip ir reikia? Kodėl? Tipo turi būtu bent kartą "suaktyvintas-paleistas", kad perkrovus, sistema rastu kokį app'sa auto-start'int? Kaip tai apeiti, kad švariai įrašius šį app'sa ir perkrovus įrenginį pasikeistu paveikslėlis?

 

Manifest:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="desktopwallpaper.com.desktopwallpaper">
    <uses-permission android:name="android.permission.SET_WALLPAPER" />
    <uses-permission android:name="android.permission.SET_WALLPAPER_HINTS"/>
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme">

        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <service android:name=".AndroidStartServiceOnBoot" ></service>

        <receiver android:name=".BootReciever"
            android:enabled="true"
            android:exported="false">

            <intent-filter >
                <action android:name="android.intent.action.BOOT_COMPLETED"/>
            </intent-filter>
        </receiver>

    </application>
</manifest>

MainActivity:

package desktopwallpaper.com.desktopwallpaper;

import android.app.Activity;
import android.app.WallpaperManager;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

import static desktopwallpaper.com.desktopwallpaper.R.styleable.View;

public class MainActivity extends Activity {
	WallpaperManager wallpaperManager ;
	Bitmap bitmap1, bitmap2 ;
	DisplayMetrics displayMetrics ;
	int width, height;
	BitmapDrawable bitmapDrawable ;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		bitmapDrawable = (BitmapDrawable) getDrawable(R.drawable.bg);
		bitmap1 = bitmapDrawable.getBitmap();
		GetScreenWidthHeight();

		bitmap2 = Bitmap.createScaledBitmap(bitmap1, width, height, false);

		wallpaperManager = WallpaperManager.getInstance(MainActivity.this);
		try {
			wallpaperManager.setBitmap(bitmap2);
			wallpaperManager.suggestDesiredDimensions(width, height);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	public void GetScreenWidthHeight(){
		displayMetrics = new DisplayMetrics();
		getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
		width = displayMetrics.widthPixels;
		height = displayMetrics.heightPixels;
	}
}

AndroidStartServiceOnBoot:

package desktopwallpaper.com.desktopwallpaper;

import android.app.Service;
import android.app.WallpaperManager;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.os.IBinder;
import android.util.DisplayMetrics;

import java.io.IOException;

public class AndroidStartServiceOnBoot extends Service {
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    WallpaperManager wallpaperManager ;
    Bitmap bitmap1, bitmap2 ;
    BitmapDrawable bitmapDrawable ;

    @Override
    public void onCreate() {
        super.onCreate();
        bitmapDrawable = (BitmapDrawable) getDrawable(R.drawable.bg);
        bitmap1 = bitmapDrawable.getBitmap();
        bitmap2 = Bitmap.createScaledBitmap(bitmap1, 1280, 800, false);
        wallpaperManager = WallpaperManager.getInstance(AndroidStartServiceOnBoot.this);
        try {
            wallpaperManager.setBitmap(bitmap2);
            wallpaperManager.suggestDesiredDimensions(1280, 800);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

BootReciever:

package desktopwallpaper.com.desktopwallpaper;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class BootReciever extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if(intent.getAction().equalsIgnoreCase(Intent.ACTION_BOOT_COMPLETED))
        {
            Intent serviceIntent = new Intent(context, AndroidStartServiceOnBoot.class);
            context.startService(serviceIntent);
        }
    }
}

[mindux9]

Kaip suprantu, be root to neina APEITI

http://stackoverflow.com/questions/31353411/app-doesnt-auto-start-an-app-when-booting-the-device-in-android/31356281#31356281