我尝试通过多次权限检查访问Android 6 Marshmallow中的所有联系人和所有者电子邮件ID，
但在我的应用程序中，它有时会与SecurityException崩溃，有时会显示权限请求，当我允许时，它会在我重新启动应用程序之前不会触发联系人的阅读。
我的代码中是否遗漏了任何内容？
public static final int REQUEST_ID_MULTIPLE_PERMISSIONS = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if(checkAndRequestPermissions()) {
// carry on the normal flow, as the case of permissions granted.
try {
Account[] accounts = AccountManager.get(getApplicationContext()).getAccountsByType("com.google");
for (Account account : accounts) {
String emailid = account.name;
Log.e("account", emailid);
}
} catch (Exception e) {
Log.e("Exception", "Exception:" + e);
}
ContentResolver cr = getApplicationContext().getContentResolver(); //Activity/Application android.content.Context
Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
if (cursor.moveToFirst()) {
do {
String contactid = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
if (Integer.parseInt(cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[]{contactid}, null);
while (pCur.moveToNext()) {
String contactName = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
String contactNumber = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
alContacts.add(contactNumber);
alName.add(contactName);
Log.e("Contact Name", contactName);
Log.e("Contact Number", contactNumber);
break;
}
pCur.close();
}
} while (cursor.moveToNext());
}
}
}
}
private boolean checkAndRequestPermissions() {
int permissionSendMessage = ContextCompat.checkSelfPermission(this,
Manifest.permission.SEND_SMS);
int locationPermission = ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION);
List<String> listPermissionsNeeded = new ArrayList<>();
if (locationPermission != PackageManager.PERMISSION_GRANTED) {
listPermissionsNeeded.add(Manifest.permission.ACCESS_FINE_LOCATION);
}
if (permissionSendMessage != PackageManager.PERMISSION_GRANTED) {
listPermissionsNeeded.add(Manifest.permission.SEND_SMS);
}
if (!listPermissionsNeeded.isEmpty()) {
ActivityCompat.requestPermissions(this, listPermissionsNeeded.toArray(new String[listPermissionsNeeded.size()]),REQUEST_ID_MULTIPLE_PERMISSIONS);
return false;
}
return true;
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
Log.d(TAG, "Permission callback called-------");
switch (requestCode) {
case REQUEST_ID_MULTIPLE_PERMISSIONS: {
Map<String, Integer> perms = new HashMap<>();
// Initialize the map with both permissions
perms.put(Manifest.permission.SEND_SMS, PackageManager.PERMISSION_GRANTED);
perms.put(Manifest.permission.ACCESS_FINE_LOCATION, PackageManager.PERMISSION_GRANTED);
// Fill with actual results from user
if (grantResults.length > 0) {
for (int i = 0; i < permissions.length; i++)
perms.put(permissions[i], grantResults[i]);
// Check for both permissions
if (perms.get(Manifest.permission.SEND_SMS) == PackageManager.PERMISSION_GRANTED
&& perms.get(Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
Log.d(TAG, "sms & location services permission granted");
// process the normal flow
//else any one or both the permissions are not granted
} else {
Log.d(TAG, "Some permissions are not granted ask again ");
//permission is denied (this is the first time, when "never ask again" is not checked) so ask again explaining the usage of permission
// // shouldShowRequestPermissionRationale will return true
//show the dialog or snackbar saying its necessary and try again otherwise proceed with setup.
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.SEND_SMS) || ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_FINE_LOCATION)) {
showDialogOK("SMS and Location Services Permission required for this app",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case DialogInterface.BUTTON_POSITIVE:
checkAndRequestPermissions();
break;
case DialogInterface.BUTTON_NEGATIVE:
// proceed with logic by disabling the related features or quit the app.
break;
}
}
});
}
//permission is denied (and never ask again is checked)
//shouldShowRequestPermissionRationale will return false
else {
Toast.makeText(this, "Go to settings and enable permissions", Toast.LENGTH_LONG)
.show();
// //proceed with logic by disabling the related features or quit the app.
}
}
}
}
}
}
private void showDialogOK(String message, DialogInterface.OnClickListener okListener) {
new AlertDialog.Builder(this)
.setMessage(message)
.setPositiveButton("OK", okListener)
.setNegativeButton("Cancel", okListener)
.create()
.show();
}
答案 0 :(得分：1)
用以下方法替换checkAndRequestPermissions（）方法。
private boolean checkAndRequestPermissions() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if(this.checkSelfPermission(permission.SEND_SMS)== PackageManager.PERMISSION_GRANTED && this.checkSelfPermission(permission.ACCESS_FINE_LOCATION)== PackageManager.PERMISSION_GRANTED){
return true;
}else{
if(shouldShowRequestPermissionRationale(Manifest.permission.SEND_SMS)){
Toast.makeText(MainActivity.this,"Your Permissions is required to send msg .....",Toast.LENGTH_LONG).show();
return false;
}
if(shouldShowRequestPermissionRationale(Manifest.permission.ACCESS_FINE_LOCATION)){
Toast.makeText(MainActivity.this,"Your Permissions is required to get your current location .....",Toast.LENGTH_LONG).show();
return false;
}
requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.permission.SEND_SMS}, REQUEST_ID_MULTIPLE_PERMISSIONS);
return false;
}
}else{
return true;
}
return false;
}
答案 1 :(得分：1)
尝试使用this简单的Android权限库。它使开发人员的生活更加轻松
在gradle中包含以下依赖项
dependencies {
compile 'com.vistrav:ask:1.2'
}
并在您的活动中使用以下代码段来请求许可。
Ask.on(context)
.forPermissions(Manifest.permission.ACCESS_COARSE_LOCATION
, Manifest.permission.WRITE_EXTERNAL_STORAGE) //one or more permissions
.withRationales("Location permission need for map to work properly",
"In order to save file you will need to grant storage permission") //optional
.when(new Ask.Permission() {
@Override
public void granted(List<String> permissions) {
Log.i(TAG, "granted :: " + permissions);
}
@Override
public void denied(List<String> permissions) {
Log.i(TAG, "denied :: " + permissions);
}
}).go();
这就是你所需要的一切。