我有应用程序请求运行时权限，以便在应用程序启动时调用对话框，但不知怎的，我的代码不会请求任何权限或工作。应用程序启动时我需要它;询问用户是否允许呼叫，如果用户拒绝，请再次询问权限并转到权限设置。
这是我的代码：
public class MainActivity extends AppCompatActivity {
private FirebaseAnalytics mFirebaseAnalytics;
private AdView mAdView;
private Button button_id;
private Button button_mobily;
private Button button_stc;
private Button button_zain;
private Button button_share;
private Button button_exit;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dash);
NativeExpressAdView adView = (NativeExpressAdView)findViewById(R.id.adView);
AdRequest request = new AdRequest.Builder().build();
adView.loadAd(request);
mFirebaseAnalytics = FirebaseAnalytics.getInstance(this);
Bundle bundle = new Bundle();
bundle.putString(FirebaseAnalytics.Param.ITEM_ID, "main");
bundle.putString(FirebaseAnalytics.Param.ITEM_NAME, "opened");
bundle.putString(FirebaseAnalytics.Param.CONTENT_TYPE, "image");
mFirebaseAnalytics.logEvent(FirebaseAnalytics.Event.SELECT_CONTENT, bundle);
isPermissionGranted();
button_exit = (Button) findViewById(R.id.exit_buton_id);
button_share = (Button) findViewById(R.id.Share_buton);
button_id = (Button) findViewById(R.id.edit_id);
button_mobily = (Button) findViewById(R.id.mobily_buton);
button_stc = (Button) findViewById(R.id.stc_buton);
button_zain = (Button) findViewById(R.id.zain_buton);
button_id.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Intent myIntent = new Intent(MainActivity.this, NationalId.class);
MainActivity.this.startActivity(myIntent);
}
});
button_share.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
try {
Intent i = new Intent(Intent.ACTION_SEND);
i.setType("text/plain");
i.putExtra(Intent.EXTRA_SUBJECT, "test");
String sAux = "\n download my app\n\n";
sAux = sAux + "https://play.google.com/store/apps/details?id=Orion.Soft \n\n";
i.putExtra(Intent.EXTRA_TEXT, sAux);
startActivity(Intent.createChooser(i, "share on"));
} catch (Exception e) {
//e.toString();
}
}
});
button_exit.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
close();
}
});
button_mobily.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
Intent myIntent = new Intent(MainActivity.this, OpreatorMobily.class);
MainActivity.this.startActivity(myIntent);
}
});
button_stc.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
Intent myIntent = new Intent(MainActivity.this, OpreatorSTC.class);
MainActivity.this.startActivity(myIntent);
}
});
button_zain.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
Intent myIntent = new Intent(MainActivity.this, OpreatorZain.class);
MainActivity.this.startActivity(myIntent);
}
});
}
public boolean isPermissionGranted() {
if (Build.VERSION.SDK_INT >= 23) {
if (checkSelfPermission(android.Manifest.permission.CALL_PHONE)
== PackageManager.PERMISSION_GRANTED) {
Log.v("TAG", "Permission is granted");
return true;
} else {
Log.v("TAG", "Permission is revoked");
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CALL_PHONE}, 1);
return false;
}
} else { //permission is automatically granted on sdk<23 upon installation
Log.v("TAG", "Permission is granted");
return true;
}
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case 1: {
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(getApplicationContext(), "Permission granted", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getApplicationContext(), "Permission denied", Toast.LENGTH_SHORT).show();
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
public void close() {
// TODO Auto-generated method stub
finish();
System.exit(0);
}
}
答案 0 :(得分：0)
您不需要检查Android版本，Android足够聪明，可以知道用户设备上的操作系统版本。
此外，如果您尝试调用此功能，则需要更改权限的调用方式。
public boolean isPermissionGranted() {
Intent callOfficeIntent = new Intent(Intent.ACTION_CALL);
callOfficeIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
callOfficeIntent.setData(Uri.parse("tel:" + mNumberToCall));
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.CALL_PHONE},
10);
return;
} else {
try {
startActivity(callOfficeIntent);
} catch (ActivityNotFoundException e) {
Toast.makeText(getApplicationContext(), "No number to call", Toast.LENGTH_SHORT).show();
}
}
}
如果您只是想获得权限但不立即拨打电话，请将其放入您的方法中。这只是要求允许作为DialogBox。
if(ActivityCompat.checkSelfPermission(getActivity(),Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED){
if(ActivityCompat.shouldShowRequestPermissionRationale(getActivity(),Manifest.permission.READ_PHONE_STATE)){
//Show Information about why you need the permission
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("Need Permission");
builder.setMessage("This app needs phone permission.");
builder.setPositiveButton("Grant", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
requestPermissions(new String[]{Manifest.permission.READ_PHONE_STATE},PERMISSION_CALLBACK_CONSTANT);
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();
} else if (permissionStatus.getBoolean(Manifest.permission.READ_PHONE_STATE,false)) {
//Previously Permission Request was cancelled with 'Dont Ask Again',
// Redirect to Settings after showing Information about why you need the permission
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("Need Permission");
builder.setMessage("This app needs storage permission.");
builder.setPositiveButton("Grant", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
sentToSettings = true;
Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("package", getActivity().getPackageName(), null);
intent.setData(uri);
startActivityForResult(intent, REQUEST_PERMISSION_SETTING);
Toast.makeText(getActivity(), "Go to Permissions to Grant Phone", Toast.LENGTH_LONG).show();
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();
} else {
//just request the permission
requestPermissions(new String[]{Manifest.permission.READ_PHONE_STATE},PERMISSION_CALLBACK_CONSTANT);
}
txtPermissions.setText("Permissions Required");
SharedPreferences.Editor editor = permissionStatus.edit();
editor.putBoolean(Manifest.permission.READ_PHONE_STATE,true);
editor.commit();
} else {
//You already have the permission, just go ahead.
proceedAfterPermission();
}
}
});
}
private void proceedAfterPermission() {
txtPermissions.setText("We've got the permission");
Toast.makeText(getActivity(), "We got All Permissions", Toast.LENGTH_LONG).show();
}
不必使用最后一种方法，只需将textView更改为toast。
答案 1 :(得分：0)
我找到了一个由“ Nabin Bhandari”开发的简单的Github库。它易于实施，可以直接定制。 Github library link...
请添加此依赖项以将此库添加到您的代码中。
实现'com.nabinbhandari.android:permissions:3.8'
这允许您请求单个权限，多个权限并自定义自己的对话框。
此外，
使用此代码可以同时询问多个权限。
String[] permissions = {Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE};
Permissions.check(this/*context*/, permissions, null/*rationale*/, null/*options*/, new PermissionHandler() {
@Override
public void onGranted() {
// do your task.
}
});
如果要自定义权限请求，请使用此代码：
String[] permissions = {Manifest.permission.ACCESS_FINE_LOCATION};
String rationale = "Please provide location permission so that you can ...";
Permissions.Options options = new Permissions.Options()
.setRationaleDialogTitle("Info")
.setSettingsDialogTitle("Warning");
Permissions.check(this/*context*/, permissions, rationale, options, new PermissionHandler() {
@Override
public void onGranted() {
// do your task.
}
@Override
public void onDenied(Context context, ArrayList<String> deniedPermissions) {
// permission denied, block the feature.
}
});