我没有为我的应用获取java.lang.SecurityException,而未授予android.permission.WRITE_SETTINGS.即使我已将其添加到清单xml文件中

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/Theme.AppCompat.Light.NoActionBar">
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name=".SoundActivity1"></activity>
</application>

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

编辑1：好的,所以我必须在活动之外的类中运行此代码,我将如何寻求用户许可,然后,如果他们授予了该权限,请在外部的类中运行此代码.活动？ —

Uri newRingtone = Uri.parse("android.resource://com.example.myapp/" + soundID); 
RingtoneManager.setActualDefaultRingtoneUri(context,RingtoneManager.TYPE_RINGTONE,newRingtone);

在有人问之前,是的,它必须在活动之外,因为我设置我的应用程序的方式

解决方法:

每WRITE_SETTINGS documentation：

Note: If the app targets API level 23 or higher, the app user must explicitly grant this permission to the app through a permission management screen. The app requests the user’s approval by sending an intent with action 07001. The app can check whether it has this authorization by calling 07002.

因此,您应该使用以下代码：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M &&
    !Settings.System.canWrite(this)) {
  Intent intent = new Intent(Settings.ACTION_MANAGE_WRITE_SETTINGS);
  intent.setData("package:"+getPackageName());
  startActivityForResult(intent);
  // now wait for onActivityResult()
}