安卓WallpaperManager.setResource崩溃活动

Question

我试图从资源中设置墙纸，但每次我这样做时，活动都会崩溃。代码如下：

WallpaperManager myWallpaperManager = WallpaperManager.getInstance(getApplicationContext());  
try {
    myWallpaperManager.setResource(R.drawable.wallpaper_1);
} catch(IOException e) {    
    Toast.makeText(wallpaper.this, "Wallpaper error!", Toast.LENGTH_SHORT).show();
}

Toast永远不会出现，日志只显示为

Process com.test.app (pid 1583) has died.

紧跟其后的是

WIN DEATH: Window{b47fab10 com.test.app/com.test.app.MainActivity paused=false}

我用jpg和png图像都试过了，但似乎都不起作用。你知道我应该看什么吗？

Answer 1

不要忘记AndroidManifest.xml文件中的权限："android.permission.SET_WALLPAPER“。:)

Answer 2

尝试使用位图

WallpaperManager myWallpaperManager = WallpaperManager.getInstance(getApplicationContext());  

try {

            Bitmap myBitmap = BitmapFactory.decodeResource(context.getResources(),
                    R.drawable.wallpaper_1);

            Bitmap bitmapResized = Bitmap.createScaledBitmap(myBitmap, 600, 300,
                    false);

            myWallpaperManager.setBitmap(bitmapResized);

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }