Android 运行时权限总是被拒绝
Android Runtime permission always denied
我正在尝试在 Android 级别 23 上阅读短信,但它没有显示 运行 时间许可。怎么了。
我的密码是
public class MainActivity extends AppCompatActivity implements ActivityCompat.OnRequestPermissionsResultCallback {
private static final int PERMISSION_REQUEST_SMS = 0;
private static final String TAG = MainActivity.class.getName();
private View mLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main );
mLayout = findViewById(R.id.main_layout);
showAllSMS();
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions,
int[] grantResults) {
Log.i(TAG, "onRequestPermission Result = "+grantResults[0]);
if (requestCode == PERMISSION_REQUEST_SMS) {
// Request for camera permission.
if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Log.i(TAG, "onRequestPermission Result 1");
// Permission has been granted. Start camera preview Activity.
Snackbar.make(mLayout, "Camera permission was granted. Starting preview.",
Snackbar.LENGTH_SHORT)
.show();
readSMS();
} else {
// Permission request was denied.
Snackbar.make(mLayout, "Camera permission request was denied.",
Snackbar.LENGTH_LONG)
.show();
}
}
// END_INCLUDE(onRequestPermissionsResult)
}
private void showAllSMS() {
Log.i(TAG, "=================");
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_SMS)
== PackageManager.PERMISSION_GRANTED) {
Log.i(TAG, "================= 1");
// Permission is already available, start camera preview
Snackbar.make(mLayout,
"Camera permission is available. Starting preview.",
Snackbar.LENGTH_LONG).show();
readSMS();
} else {
Log.i(TAG, "================= 2");
// Permission is missing and must be requested.
requestReadSMSPermission();
}
// END_INCLUDE(startCamera)
}
/**
* Requests the {@link android.Manifest.permission#CAMERA} permission.
* If an additional rationale should be displayed, the user has to launch the request from
* a SnackBar that includes additional information.
*/
private void requestReadSMSPermission() {
// Permission has not been granted and must be requested.
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.READ_SMS)) {
// Provide an additional rationale to the user if the permission was not granted
// and the user would benefit from additional context for the use of the permission.
// Display a SnackBar with a button to request the missing permission.
Snackbar.make(mLayout, "Camera access is required to display the camera preview.",
Snackbar.LENGTH_INDEFINITE).setAction("OK", new View.OnClickListener() {
@Override
public void onClick(View view) {
// Request the permission
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.READ_SMS},
PERMISSION_REQUEST_SMS);
}
}).show();
} else {
Snackbar.make(mLayout,
"Permission is not available. Requesting camera permission.",
Snackbar.LENGTH_LONG).show();
// Request the permission. The result will be received in onRequestPermissionResult().
ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.CAMERA},
PERMISSION_REQUEST_SMS);
}
}
private void readSMS() {
Log.d(TAG, "REad smsm");
}
}
它总是显示我 "Camera permission request was denied."。它是从 Android 示例中复制的。带摄像头权限的真实代码绝对没问题。
请说明。
更改这行代码,似乎您请求的是摄像头权限而不是短信读取和接收权限,并且它没有添加到您的清单中。
ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.CAMERA},
PERMISSION_REQUEST_SMS);
并且请清理你的代码,每个人都以为你想使用相机。
您正在尝试获取 Read_SMS 权限的运行时权限,为此您需要更改 else 条件requestReadSMSPermission()。
private void requestReadSMSPermission () {
// Permission has not been granted and must be requested.
if() {
//your existing code
} else {
Snackbar.make(mLayout,
"Permission is not available. Requesting Read SMS.",
Snackbar.LENGTH_LONG).show();
// Request the permission. The result will be received in onRequestPermissionResult().
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_SMS},
PERMISSION_REQUEST_SMS);
}
}
仅当设备在 M 或更高 上时才请求以下权限。在较旧的平台上,这些权限不会被请求并且将不可用。
<uses-permission-sdk-m android:name="android.permission.READ_CONTACTS" />
<uses-permission-sdk-m android:name="android.permission.WRITE_CONTACTS" />
我正在尝试在 Android 级别 23 上阅读短信,但它没有显示 运行 时间许可。怎么了。
我的密码是
public class MainActivity extends AppCompatActivity implements ActivityCompat.OnRequestPermissionsResultCallback {
private static final int PERMISSION_REQUEST_SMS = 0;
private static final String TAG = MainActivity.class.getName();
private View mLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main );
mLayout = findViewById(R.id.main_layout);
showAllSMS();
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions,
int[] grantResults) {
Log.i(TAG, "onRequestPermission Result = "+grantResults[0]);
if (requestCode == PERMISSION_REQUEST_SMS) {
// Request for camera permission.
if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Log.i(TAG, "onRequestPermission Result 1");
// Permission has been granted. Start camera preview Activity.
Snackbar.make(mLayout, "Camera permission was granted. Starting preview.",
Snackbar.LENGTH_SHORT)
.show();
readSMS();
} else {
// Permission request was denied.
Snackbar.make(mLayout, "Camera permission request was denied.",
Snackbar.LENGTH_LONG)
.show();
}
}
// END_INCLUDE(onRequestPermissionsResult)
}
private void showAllSMS() {
Log.i(TAG, "=================");
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_SMS)
== PackageManager.PERMISSION_GRANTED) {
Log.i(TAG, "================= 1");
// Permission is already available, start camera preview
Snackbar.make(mLayout,
"Camera permission is available. Starting preview.",
Snackbar.LENGTH_LONG).show();
readSMS();
} else {
Log.i(TAG, "================= 2");
// Permission is missing and must be requested.
requestReadSMSPermission();
}
// END_INCLUDE(startCamera)
}
/**
* Requests the {@link android.Manifest.permission#CAMERA} permission.
* If an additional rationale should be displayed, the user has to launch the request from
* a SnackBar that includes additional information.
*/
private void requestReadSMSPermission() {
// Permission has not been granted and must be requested.
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.READ_SMS)) {
// Provide an additional rationale to the user if the permission was not granted
// and the user would benefit from additional context for the use of the permission.
// Display a SnackBar with a button to request the missing permission.
Snackbar.make(mLayout, "Camera access is required to display the camera preview.",
Snackbar.LENGTH_INDEFINITE).setAction("OK", new View.OnClickListener() {
@Override
public void onClick(View view) {
// Request the permission
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.READ_SMS},
PERMISSION_REQUEST_SMS);
}
}).show();
} else {
Snackbar.make(mLayout,
"Permission is not available. Requesting camera permission.",
Snackbar.LENGTH_LONG).show();
// Request the permission. The result will be received in onRequestPermissionResult().
ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.CAMERA},
PERMISSION_REQUEST_SMS);
}
}
private void readSMS() {
Log.d(TAG, "REad smsm");
}
}
它总是显示我 "Camera permission request was denied."。它是从 Android 示例中复制的。带摄像头权限的真实代码绝对没问题。
请说明。
更改这行代码,似乎您请求的是摄像头权限而不是短信读取和接收权限,并且它没有添加到您的清单中。
ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.CAMERA},
PERMISSION_REQUEST_SMS);
并且请清理你的代码,每个人都以为你想使用相机。
您正在尝试获取 Read_SMS 权限的运行时权限,为此您需要更改 else 条件requestReadSMSPermission()。
private void requestReadSMSPermission () {
// Permission has not been granted and must be requested.
if() {
//your existing code
} else {
Snackbar.make(mLayout,
"Permission is not available. Requesting Read SMS.",
Snackbar.LENGTH_LONG).show();
// Request the permission. The result will be received in onRequestPermissionResult().
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_SMS},
PERMISSION_REQUEST_SMS);
}
}
仅当设备在 M 或更高 上时才请求以下权限。在较旧的平台上,这些权限不会被请求并且将不可用。
<uses-permission-sdk-m android:name="android.permission.READ_CONTACTS" />
<uses-permission-sdk-m android:name="android.permission.WRITE_CONTACTS" />