如何使用系統默認操作設置壁紙

Question

我通過調用系統默認動作設置從SD卡作爲牆紙圖像..

Answer 1

File file = new File(Environment.getExternalStorageDirectory(), "your_image.jpg"); 
String path = file.getAbsolutePath(); 
File imageFile = new File(path); 

if(imageFile.exists()) { 
    Bitmap bitmap = BitmapFactory.decodeFile(path); 

    WallpaperManager mWallpaperManager = WallpaperManager.getInstance(this); 

    try { 
     mWallpaperManager.setBitmap(bitmap); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
} 

添加下面的權限在Menifest.xml

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

播種編號：

Intent intent = new Intent("com.android.camera.action.CROP", myIntent.getData()); 
if (myIntent.getStringExtra("mimeType") != null) { 
    intent.setDataAndType(myIntent.getData(), myIntent.getStringExtra("mimeType")); 
} 
intent.putExtra("crop", "true"); 
intent.putExtra("aspectX", 1); 
intent.putExtra("aspectY", 1); 
intent.putExtra("outputX", 96); 
intent.putExtra("outputY", 96); 
intent.putExtra("return-data", true); 
startActivityForResult(intent, REQUEST_CROP_PHOTO);