Android Runtime Permission test

AndroidManifest.xml

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

CheckSDKVersion.java

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    // 继续
}

CheckSelfPermission.java

switch (checkSelfPermission(Manifest.permission.READ_CONTACTS)) {
    case PackageManager.PERMISSION_GRANTED:
        // 已有授权
        break;
    case PackageManager.PERMISSION_DENIED:
        // 没有权限：尚未请求过权限，或者请求授权被拒绝，或者曾经授权过，
        // 但被用户在设置中禁用权限
        break;
    default:
        // 其实只会返回上述两种情况
        break;
}

OnRequestPermissionsResult.java

@Override
public void onRequestPermissionsResult(int requestCode, 
        @NonNull String[] permissions, @NonNull int[] grantResults) {
    if (requestCode == REQUEST_PERMISSION) {
        if (permissions.length == 1 &&
                permissions[0].equals(Manifest.permission.READ_CONTACTS) &&
                grantResults.length == 1) {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // 授权请求被通过，读取通讯录
            } else {
                // 授权请求被拒绝
            }
        } else {
            // 其他情况
        }
    }
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}

RequestPermissions.java

requestPermissions(new String[] { Manifest.permission.READ_CONTACTS },
                        REQUEST_PERMISSION);

ShouldShowRequestPermissionRationale.java

public boolean shouldShowRequestPermissionRationale(
        @NonNull String permission)