Android N 权限问题

Question

我的测试设备上有 Android N Developer 预览版，我在应用启动期间请求运行时许可。

但不幸的是，该应用程序不显示用于授予权限的警告对话框。我正在使用以下代码：

启动器Activity

public class LoginActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        if(checkPermissions()) {
            renderView();
        }
    }

    private boolean checkPermissions() {

        int permissionWriteStorage = ContextCompat.checkSelfPermission(this, Manifest.permission_group.STORAGE);
        int permissionPhoneState = ContextCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE);

        Log.i("permission",(permissionWriteStorage == PackageManager.PERMISSION_GRANTED) + "");
        //This prints false

        List<String> listPermissionsNeeded = new ArrayList<>();
        if (permissionWriteStorage != PackageManager.PERMISSION_GRANTED) {
            listPermissionsNeeded.add(Manifest.permission_group.STORAGE);
        }
        if (permissionPhoneState != PackageManager.PERMISSION_GRANTED) {
            listPermissionsNeeded.add(Manifest.permission.READ_PHONE_STATE);
        }

        if (!listPermissionsNeeded.isEmpty()) {
            Log.i("permission", "in if");
            //I get this in the logs

            ActivityCompat.requestPermissions(this, listPermissionsNeeded.toArray(new String[listPermissionsNeeded.size()]),REQUEST_ID_MULTIPLE_PERMISSIONS);
            return false;
        }
        return true;
    }
}

build.gradle

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'

android {
    compileSdkVersion 24
    buildToolsVersion "23.0.3"

    defaultConfig {
        applicationId 'com.***.***'
        minSdkVersion 16
        targetSdkVersion 24
    }
}

编辑：解决方案 (1/2)

通过将构建工具版本更改为 24.0.1，我收到了 READ_PHONE_STATE 权限的警报，但不是权限组 STORAGE 的警报。一个权限组的每一个权限都需要单独请求吗？

编辑 2：解决方案 (2/2)

我设法通过用 Manifest.permission.WRITE_EXTERNAL_STORAGE 替换 Manifest.permission_group.STORAGE 来解决它。根据文档，您只需要确认对整个组的一项危险权限。

The user only needs to grant permission once for each permission group. If your app requests any other permissions in that group (that are listed in your app manifest), the system automatically grants them.

Answer 1

用户 ActivityCompat 而不是 ContextCompat

int permissionWriteStorage = ActivityCompat.checkSelfPermission(this, Manifest.permission_group.STORAGE);
int permissionPhoneState = ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE);

Answer 2

我不确定但更改了构建工具版本

android {
compileSdkVersion 24
buildToolsVersion "24.0.0"

defaultConfig {
    applicationId 'com.***.***'
    minSdkVersion 16
    targetSdkVersion 24
}

Answer 3

我知道这个技巧很麻烦，但为什么不简单地使用它呢？

你也可以实现多重权限。

void getPermission(){
    if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission_group.STORAGE) != PackageManager.PERMISSION_GRANTED) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
            ActivityCompat.requestPermissions(Final_maps.this,
                    new String[]{android.Manifest.permission_group.STORAGE, android.Manifest.permission.READ_PHONE_STATE},
                    CODE);

    }

}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    switch (requestCode) {
        case CODE:
            if (grantResults.length > 0
                    && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                setLocationEnabled();
                Toast.makeText(this, "Permission Granted!", Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(this, "Permission Denied!", Toast.LENGTH_SHORT).show();
                finish();
            }
    }
}

Answer 4

如果您不实现 onRequestPermissionsResult 方法，则不会显示权限警报。

Answer 5

在清单中授予权限

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

Then paste your code in in Activity

 private void getPermission() {

    if (ContextCompat.checkSelfPermission(MapsActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) !=
            PackageManager.PERMISSION_GRANTED) {
        if (ContextCompat.checkSelfPermission(MapsActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) !=
                PackageManager.PERMISSION_GRANTED) {

            ActivityCompat.requestPermissions(MapsActivity.this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION}, 0);
        }
    }
}

Also Call this override method

 @Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    if (requestCode == PERMISSION_REQUEST_CODE) {
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED
                && grantResults[1] == PackageManager.PERMISSION_GRANTED) {


        }
    }

}

Android N 权限问题

Android N permission Issue

android

android-permissions

android-7.0-nougat