Android 6.0 权限对话框不显示

Question

我想尝试在 Android 6.0 中请求权限，但是我遇到了麻烦。

AndroidManifest.xml

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

构建.gradle

compileSdkVersion 23
buildToolsVersion '23.0.2'

defaultConfig {
    applicationId "com.zhangkaiyue.jkdemo"
    minSdkVersion 15
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
}

Activity

    mLv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            if (Build.VERSION.SDK_INT >= 23) {
                int checkPermission = ContextCompat.checkSelfPermission(UsingCustomLayoutActivity.this, Manifest.permission_group.LOCATION);
                if (checkPermission != PackageManager.PERMISSION_GRANTED) {
                    ActivityCompat.requestPermissions(UsingCustomLayoutActivity.this, new String[]{Manifest.permission_group.LOCATION}, 111);
                }
            } else {
                Toast.makeText(UsingCustomLayoutActivity.this, "haha", Toast.LENGTH_SHORT).show();
            }
        }
    });

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    if (requestCode == 111){
        if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            Toast.makeText(UsingCustomLayoutActivity.this, "hehe", Toast.LENGTH_SHORT).show();
        }else {
            Toast.makeText(UsingCustomLayoutActivity.this, "heihei", Toast.LENGTH_SHORT).show();
        }
    }
}

当我点击一个项目时，权限对话框不显示， toast 文本是heihei，我不知道为什么，请帮助。

Answer 1

您不能像使用 Manifest.permission_group.LOCATION 那样请求整个权限组的权限。

您必须请求特定权限，即 Manifest.permission.ACCESS_FINE_LOCATION。

int checkPermission = ContextCompat.checkSelfPermission(UsingCustomLayoutActivity.this, 
        Manifest.permission.ACCESS_FINE_LOCATION);

if (checkPermission != PackageManager.PERMISSION_GRANTED) {
    ActivityCompat.requestPermissions(UsingCustomLayoutActivity.this, 
            new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 111);
}

另请注意，如果您已经拥有 ACCESS_FINE_LOCATION，则权限 ACCESS_COARSE_LOCATION 会被隐式授予，因此您可以忽略它。