Question

我有壁纸的应用程序，我允许用户直接从应用程序设置壁纸。在这里，我将图像的http url转换为Bitmap并调用Android的WallpaperManager类。

以下是将网址转换为位图并设置为WallpaperManager位图的代码：

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

您获得的异常明确定义您需要在Manifest中添加权限。

java.lang.SecurityException：Permission Denial：编写com.android.providers.settings.SettingsProvider uri content：// settings / system from pid = 21407，uid = 10133需要android.permission.WRITE_SETTINGS或grantUriPermission（）< / p>

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

Answer 2

logcat很清楚：

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()

所以你只需要在你的清单文件中添加这个权限：

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

在申请标签下。

希望它有所帮助。

Answer 3

您缺少在AndroidManifest.xml中添加WRITE_SETTINGS权限。

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

如果你不需要更长的Bitmap对象，那么使用getBitMapFromHttpURL直接从bitamp检查，而不是声明Bitamp对象。

if (getBitMapFromHttpURL() != null) {
    wallpaperManager.setBitmap(getBitMapFromHttpURL());
} else {
    Toast.makeText(this, "Failed to set wallpaper",Toast.LENGTH_LONG).show();
}

Answer 4

你可能忘了带任何这些权限：

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

获取java.lang.SecurityException：在Android中设置壁纸时权限被拒绝

4 个答案: