android - 获取 java.lang.SecurityException : Permission Denial while setting wallpaper in Android

Question

我有一个壁纸应用程序，我允许用户直接从该应用程序设置壁纸。这里我将图像的http url 转换为Bitmap 并调用Android 的WallpaperManager 类。

以下是将 URL 转换为位图并设置到 WallpaperManager 位图中的代码:

private void setWallpaper() {
        WallpaperManager wallpaperManager = WallpaperManager.getInstance(this);
        try {
            Bitmap image = getBitMapFromHttpURL();
            if (image != null) {
                wallpaperManager.setBitmap(getBitMapFromHttpURL());
                image.recycle();
                image = null;
            } else {
                Toast.makeText(this, "Failed to set wallpaper",
                        Toast.LENGTH_LONG).show();
            }
        } catch (IOException e) {

        } catch (Exception es) {

        }
    }

此行 wallpaperManager.setBitmap(getBitMapFromHttpURL()); 失败，但出现以下异常:

java.lang.SecurityException: Permission Denial: writing com.android.providers.settings.SettingsProvider uri content://settings/system from pid=21407, uid=10133 requires android.permission.WRITE_SETTINGS, or grantUriPermission()
       at android.os.Parcel.readException(Parcel.java:1465)
       at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:185)
       at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:137)
       at android.content.ContentProviderProxy.insert(ContentProviderNative.java:468)
       at android.content.ContentResolver.insert(ContentResolver.java:1190)
       at android.provider.Settings$NameValueTable.putString(Settings.java:843)
       at android.provider.Settings.putString(Settings.java:6792)
       at android.provider.Settings.putString(Settings.java:6717)
       at android.app.WallpaperManager.willSendBroadcat(WallpaperManager.java:1124)
       at android.app.WallpaperManager.setBitmap(WallpaperManager.java:788)
       at com.wallie.WallpaperFullScreenActivity.setWallpaper(WallpaperFullScreenActivity.java:453)
       at com.wallie.WallpaperFullScreenActivity.access$1(WallpaperFullScreenActivity.java:448)
       at com.wallie.WallpaperFullScreenActivity$WallpaperManagerTask.doInBackground(WallpaperFullScreenActivity.java:473)
       at com.wallie.WallpaperFullScreenActivity$WallpaperManagerTask.doInBackground(WallpaperFullScreenActivity.java:1)
       at android.os.AsyncTask$2.call(AsyncTask.java:295)
       at java.util.concurrent.FutureTask.run(FutureTask.java:237)
       at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:238)
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
       at java.lang.Thread.run(Thread.java:841)

可能是什么原因？

Answer 1

您得到的异常清楚地定义了您需要在 list 中添加权限。

java.lang.SecurityException: Permission Denial: writing com.android.providers.settings.SettingsProvider uri content://settings/system from pid=21407, uid=10133 requires android.permission.WRITE_SETTINGS, or grantUriPermission()

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