Android 壁纸不适合。 (自动溢出和裁剪。)

Android Wallpaper Doesn't fit. (Overflows and crops automatically.)

我的墙纸应用程序的墙纸不适合所有设备。图片为 1080x1920 像素,在某些设备中,壁纸会溢出并自动裁剪。

这是我用来设置壁纸的代码;

img.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                WallpaperManager wallmgr = WallpaperManager.getInstance(getApplicationContext());
                try{
                    wallmgr.setResource(+ R.drawable.a1);
                } catch (IOException e){
                    e.printStackTrace();
                }
            }
        });

我可以做些什么来适应图像?

DisplayMetrics metrics = new DisplayMetrics(); 
getWindowManager().getDefaultDisplay().getMetrics(metrics);
int height = metrics.heightPixels; 
int width = metrics.widthPixels;
Bitmap tempbitMap = BitmapFactory.decodeResource(getResources(), R.drawable.img);
Bitmap bitmap = Bitmap.createScaledBitmap(tempbitMap,width,height, true);
WallpaperManager wallpaperManager = WallpaperManager.getInstance(MainActivity.this); 
wallpaperManager.setWallpaperOffsetSteps(1, 1);
wallpaperManager.suggestDesiredDimensions(width, height);
try {
    wallpaperManager.setBitmap(bitmap);
} catch (IOException e) {
    e.printStackTrace();
}

如果我没记错的话,这个问题很久以前就已经回答了?

android wallpapermanager fit screen