如何将整个图像作为壁纸贴在屏幕上

Question

我正在开发一个应用程序,从图库中选择一个图像,然后将该图像设置为壁纸.但这里的问题是只有部分图像被设置为壁纸而不是整个图像,但我想将整个图像设置为壁纸.你能告诉我怎么办？

这是我的代码......

public class Scaleimage extends Activity {
    /** Called when the activity is first created. */

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        String FileName;
        File file = new File("/sdcard/pictures");   
        File[] imageFiles = file.listFiles( );
        if(imageFiles.length > 0 ) {
            FileName = imageFiles[0].getName();
        final WallpaperManager wallpaperManager = WallpaperManager.getInstance(getBaseContext());   
        Bitmap myBitmap =  BitmapFactory.decodeFile("/sdcard/pictures" + "/" + FileName); 

        DisplayMetrics displayMetrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
        int height = displayMetrics.heightPixels;
        int width = displayMetrics.widthPixels << 1;
        myBitmap = Bitmap.createScaledBitmap(myBitmap,width, height, true);
        try {
            wallpaperManager.setBitmap( myBitmap);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }  
    }
}

Answer 1

将壁纸大小设置为您的图像大小:

WallpaperManager wm = (WallpaperManager) getSystemService(WALLPAPER_SERVICE);
wm.setBitmap(bitmap);
wm.suggestDesiredDimensions(w, h);

并记得添加权限:

<uses-permission android:name="android.permission.SET_WALLPAPER_HINTS"/>
<uses-permission android:name="android.permission.SET_WALLPAPER"/>