无法获得WRITE_SETTINGS权限

Question

当我在Android M Preview 3上有一个23的目标API时,我似乎无法获得Manifest.permission.WRITE_SETTTINGS权限.

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

请求权限不会显示我期望的对话框,但如果我未经此许可进行以下调用,

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

电话会议除外,因为我没有这个权限.

我不知道从哪里开始.23有新的铃声API吗？或者这个权限更改只是让任何非系统应用程序无法更改铃声？

Answer 1

要使用WRITE_SETTINGS,基于文档:

1. <uses-permission>将清单中的元素保持正常.

2. 打电话Settings.System.canWrite(),看看你是否有资格写出设置.

3. 如果canWrite()退货false,启动该ACTION_MANAGE_WRITE_SETTINGS活动,使用户可以同意在那里让你的应用程序实际上是写设置.

换句话说,写入设置现在是双重选择(同意安装,在允许的设置中单独同意),类似于设备管理API,可访问性服务等.

另请注意,我还没有尝试使用这些 - 这是基于我昨天在Android 6.0更改时所做的研究.

Answer 2

除了CommonsWare的回答和Ogix的评论之外,还有一些虚拟代码:

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然后给出一个解释情况的窗口.单击"确定"按钮将打开可以授予权限的Android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 3

之前的答案很棒,我只是为获得许可询问的结果而添加了一点点.

 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 4

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 5

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是文档

和写入设置文档是here

在清单中添加

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

在你的班级

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);
    }
}

并像这样使用它

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 6

我用过像下面这样的..

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();
        }
    }

清单许可

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

Answer 7

\xe2\x80\xa2Kotlin Version in Simple Steps

\n

按着这些次序：

\n

1.在normal中添加权限的usage元素manifest.xml：

\n

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

\n

2.在要更改设置的位置，选中写入权限：

\n

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

\n

3.如果请求权限，还请添加以下代码行：

\n

private fun startManageWriteSettingsPermission() {\n    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {\n        Intent(\n            Settings.ACTION_MANAGE_WRITE_SETTINGS,\n            Uri.parse("package:${context.packageName}")\n        ).let {\n            startActivityForResult(it, REQUEST_CODE_WRITE_SETTINGS_PERMISSION)\n        }\n    }\n}\n\noverride fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {\n    super.onActivityResult(requestCode, resultCode, data)\n\n    when (requestCode) {\n        REQUEST_CODE_WRITE_SETTINGS_PERMISSION -> {\n            if (context.canWriteSettings) {\n                // change the settings here ...\n            } else {\n                Toast.makeText(context, "Write settings permission is not granted!", Toast.LENGTH_SHORT).show()\n            }\n        }\n    }\n}\n\nval Context.canWriteSettings: Boolean\n    get() = Build.VERSION.SDK_INT < Build.VERSION_CODES.M || Settings.System.canWrite(this)\n\ncompanion object {\n    private const val REQUEST_CODE_WRITE_SETTINGS_PERMISSION = 5\n}\n

\n

Answer 8

权限android.permission.WRITE_SETTINGS现在在signature|appop|pre23|preinstalled像android.permission.CHANGE_NETWORK_STATE和这样的组中android.permission.SYSTEM_ALERT_WINDOW

这意味着您可以在 sdk 22 及以下版本上获得它。在较新版本上，您必须是应用程序运营商。