我正在更新我们的应用程序，以使用新的M运行时权限系统。
除了onRequestPermissionsResult()之外，它都在工作。我需要检查按下按钮的权限，如果成功，就发送一条短信。当我授权这样做时，对话框会关闭，但直到我再次按下按钮，它才会触发“发送文本”。
我已经在onRequestPermissionsResult()方法中调试和设置了断点，但它从未进入它。
首先调用这个方法:
private void askForPermission() {
String[] permissions = new String[]{Manifest.permission.SEND_SMS};
ActivityCompat.requestPermissions(getActivity(), permissions, PERMISSIONS_CODE);
}
然后我的回调函数是这样的:
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == PERMISSIONS_CODE) {
for (int i = 0; i < permissions.length; i++) {
String permission = permissions[i];
int grantResult = grantResults[i];
if (permission.equals(Manifest.permission.SEND_SMS)) {
if (grantResult == PackageManager.PERMISSION_GRANTED) {
onPPSButtonPress();
} else {
requestPermissions(new String[]{Manifest.permission.SEND_SMS}, PERMISSIONS_CODE);
}
}
}
}
}
有人遇到过类似的问题吗?
感谢任何帮助。
谢谢
如果出于某种原因，你扩展了一个自定义Activity，这个Activity位于一些外部库中，不调用super，你将需要手动调用Fragment super。onRequestPermissionsResult你在你的活动onRequestPermissionsResult。
YourActivity extends SomeActivityNotCallingSuperOnRequestPermissionsResult{
Fragment requestingFragment;//the fragment requesting the permission
...
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if(requestingFragment!=null)
requestingFragment.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
...
在这里，我想展示我的代码我是如何做到这一点的。
public class CheckPermission {
public Context context;
public static final int PERMISSION_REQUEST_CODE = 200;
public CheckPermission(Context context){
this.context = context;
}
public boolean isPermissionGranted(){
int read_contact = ContextCompat.checkSelfPermission(context.getApplicationContext() , READ_CONTACTS);
int phone = ContextCompat.checkSelfPermission(context.getApplicationContext() , CALL_PHONE);
return read_contact == PackageManager.PERMISSION_GRANTED && phone == PackageManager.PERMISSION_GRANTED;
}
}
在这个类中，我想检查许可是否被授予。那我是不是会从我的MainActivity调用许可呢
public void requestForPermission() {
ActivityCompat.requestPermissions(MainActivity.this, new String[] {READ_CONTACTS, CALL_PHONE}, PERMISSION_REQUEST_CODE);
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case PERMISSION_REQUEST_CODE:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (shouldShowRequestPermissionRationale(ACCESS_FINE_LOCATION)) {
showMessageOKCancel("You need to allow access to both the permissions",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
requestPermissions(new String[]{Manifest.permission.READ_CONTACTS, Manifest.permission.CALL_PHONE},
PERMISSION_REQUEST_CODE);
}
}
});
return;
}
}
}
}
现在在onCreate方法中，你需要调用requestForPermission()函数。
就是这样。您也可以同时请求多个权限。
在你根据上面的答案检查一切之前，确保你的请求代码不是0!!
检查FragmentActivity.java中onRequestPermissionsResult()的代码:
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
@NonNull int[] grantResults) {
int index = (requestCode>>16)&0xffff;
if (index != 0) {
index--;
String who = mPendingFragmentActivityResults.get(index);
mPendingFragmentActivityResults.remove(index);
if (who == null) {
Log.w(TAG, "Activity result delivered for unknown Fragment.");
return;
}
Fragment frag = mFragments.findFragmentByWho(who);
if (frag == null) {
Log.w(TAG, "Activity result no fragment exists for who: " + who);
} else {
frag.onRequestPermissionsResult(requestCode&0xffff, permissions, grantResults);
}
}
}
