无法获得 WRITE_SETTINGS 权限

Question

当我在 Android M Preview 3 上的目标 API 为 23 时，我似乎无法获得 Manifest.permission.WRITE_SETTTINGS 权限。

requestPermissions(new String[]{Manifest.permission.WRITE_SETTINGS}, 101);

请求权限不会出现我期望的对话框，但如果我在没有此权限的情况下进行以下调用，

 RingtoneManager.setActualDefaultRingtoneUri(activity, RingtoneManager.TYPE_RINGTONE, ringUri);

调用会失败，因为我没有权限。

我不确定从这里到哪里去。 23有没有新铃声API？或者这个权限的改变只是让任何非系统应用程序无法改变铃声？

Answer 1

根据文档使用 WRITE_SETTINGS：

清单中的 <uses-permission> 元素正常。
Call Settings.System.canWrite()看看你有没有资格写出设置
如果 canWrite() returns false，请启动 the ACTION_MANAGE_WRITE_SETTINGS activity 以便用户同意允许您的应用实际写入设置。

换句话说，写入设置现在是双重选择加入（同意安装，在设置中单独同意允许），类似于设备管理 API、无障碍服务等

另请注意，我还没有尝试使用这些 — 这是基于 research that I did yesterday on Android 6.0 changes。

Answer 2

权限 android.permission.WRITE_SETTINGS 现在在组 signature|appop|pre23|preinstalled 中，如 android.permission.CHANGE_NETWORK_STATE 和 android.permission.SYSTEM_ALERT_WINDOW

这意味着您可以在 sdk 22 及以下版本上获得它。在较新的版本中，您必须是应用运营商。

Answer 3

除了 CommonsWare 的回答和 Ogix 的评论，这里还有一些伪代码：

private boolean checkSystemWritePermission() {
    boolean retVal = true;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        retVal = Settings.System.canWrite(this);
        Log.d(TAG, "Can Write Settings: " + retVal);
        if(retVal){
            Toast.makeText(this, "Write allowed :-)", Toast.LENGTH_LONG).show();
        }else{
            Toast.makeText(this, "Write not allowed :-(", Toast.LENGTH_LONG).show();
            FragmentManager fm = getFragmentManager();
            PopupWritePermission dialogFragment = new PopupWritePermission();
            dialogFragment.show(fm, getString(R.string.popup_writesettings_title));
        }
    }
    return retVal;
}

Fragment PopupwritePermission 然后给出一个 window 解释情况的地方。单击“确定”按钮将打开 Android 可以授予权限的系统菜单：

private void openAndroidPermissionsMenu() {
    Intent intent = new Intent(Settings.ACTION_MANAGE_WRITE_SETTINGS);
    intent.setData(Uri.parse("package:" + getActivity().getPackageName()));
    startActivity(intent);
}

Answer 4

前面的答案都很好，我只是稍微补充一下，也得到了请求权限的结果。

 public static void youDesirePermissionCode(Activity context){
        boolean permission;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            permission = Settings.System.canWrite(context);
        } else {
            permission = ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_SETTINGS) == PackageManager.PERMISSION_GRANTED;
        }
        if (permission) {
            //do your code
        }  else {
            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
                Intent intent = new Intent(Settings.ACTION_MANAGE_WRITE_SETTINGS);
                intent.setData(Uri.parse("package:" + context.getPackageName()));
                context.startActivityForResult(intent, MainActivity.CODE_WRITE_SETTINGS_PERMISSION);
            } else {
                ActivityCompat.requestPermissions(context, new String[]{Manifest.permission.WRITE_SETTINGS}, MainActivity.CODE_WRITE_SETTINGS_PERMISSION);
            }
        }
    }

然后在 Activity:

@SuppressLint("NewApi")
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == MainActivity.CODE_WRITE_SETTINGS_PERMISSION && Settings.System.canWrite(this)){
            Log.d("TAG", "MainActivity.CODE_WRITE_SETTINGS_PERMISSION success");
            //do your code
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == MainActivity.CODE_WRITE_SETTINGS_PERMISSION && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            //do your code
        }
    }

Answer 5

这是一个完整的例子：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    if (Settings.System.canWrite(context) {
        // Do stuff here
    }
    else {
        Intent intent = new Intent(android.provider.Settings.ACTION_MANAGE_WRITE_SETTINGS);
        intent.setData(Uri.parse("package:" + getActivity().getPackageName()));
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(intent);
    }
}

Answer 6

在 AndroidManifest.xml 中提及以下权限

在 Activity 中使用下面的 if else 来更改设置。

if(Settings.System.canWrite(this)){
    // change setting here
}
else{
    //Migrate to Setting write permission screen. 
    Intent intent = new Intent(Settings.ACTION_MANAGE_WRITE_SETTINGS);
    intent.setData(Uri.parse("package:" + mContext.getPackageName()));
    startActivity(intent);
}

Answer 7

从 android Marshmellow 开始，您需要使用旨在提高安全性的运行时权限，或者在需要时使用权限 documenatation

写入设置文档是here

在清单中添加

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

在你的class

private boolean checkSystemWritePermission() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        if(Settings.System.canWrite(context))
            return true;
        else 
            openAndroidPermissionsMenu();
    }
    return false;
}

private void openAndroidPermissionsMenu() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        Intent intent = new Intent(Settings.ACTION_MANAGE_WRITE_SETTINGS);
        intent.setData(Uri.parse("package:" + context.getPackageName()));
        context.startActivity(intent);
    }
}

然后像这样使用它

try {
       if (checkSystemWritePermission()) {
            RingtoneManager.setActualDefaultRingtoneUri(context, RingtoneManager.TYPE_RINGTONE, newUri);
            Toast.makeText(context, "Set as ringtoon successfully ", Toast.LENGTH_SHORT).show();
            }else {
                Toast.makeText(context, "Allow modify system settings ==> ON ", Toast.LENGTH_LONG).show();
            }
        } catch (Exception e) {
            Log.i("ringtoon",e.toString());
            Toast.makeText(context, "unable to set as Ringtoon ", Toast.LENGTH_SHORT).show();
        }

Answer 8

我用过波纹管像..

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        boolean retVal = true;
        retVal = Settings.System.canWrite(this);
        if (retVal == false) {
            if (!Settings.System.canWrite(getApplicationContext())) {

                Intent intent = new Intent(Settings.ACTION_MANAGE_WRITE_SETTINGS, Uri.parse("package:" + getPackageName()));
                Toast.makeText(getApplicationContext(), "Please, allow system settings for automatic logout ", Toast.LENGTH_LONG).show();
                startActivityForResult(intent, 200);
            }
        }else {
            Toast.makeText(getApplicationContext(), "You are not allowed to wright ", Toast.LENGTH_LONG).show();
        }
    }

明确许可

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

Answer 9

• `Kotlin Version in Simple Steps`

按照以下步骤操作：

1.在manifest.xml中正常添加权限的用法元素：

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

2.要更改设置的地方，勾选写入权限：

if (context.canWriteSettings) {
    // change the settings here ...
} else {
    startManageWriteSettingsPermission()
}

3. 在请求权限的情况下还要添加这些代码行：

private fun startManageWriteSettingsPermission() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        Intent(
            Settings.ACTION_MANAGE_WRITE_SETTINGS,
            Uri.parse("package:${context.packageName}")
        ).let {
            startActivityForResult(it, REQUEST_CODE_WRITE_SETTINGS_PERMISSION)
        }
    }
}

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)

    when (requestCode) {
        REQUEST_CODE_WRITE_SETTINGS_PERMISSION -> {
            if (context.canWriteSettings) {
                // change the settings here ...
            } else {
                Toast.makeText(context, "Write settings permission is not granted!", Toast.LENGTH_SHORT).show()
            }
        }
    }
}

val Context.canWriteSettings: Boolean
    get() = Build.VERSION.SDK_INT < Build.VERSION_CODES.M || Settings.System.canWrite(this)

companion object {
    private const val REQUEST_CODE_WRITE_SETTINGS_PERMISSION = 5
}

无法获得 WRITE_SETTINGS 权限

Can't get WRITE_SETTINGS permission

android

android-6.0-marshmallow

• `Kotlin Version in Simple Steps`

无法获得 WRITE_SETTINGS 权限

Can't get WRITE_SETTINGS permission

android

android-6.0-marshmallow

• Kotlin Version in Simple Steps

• `Kotlin Version in Simple Steps`