棉花糖权限应该仅在尚未授予时询问
Marshmallow permissions should ask only if not already granted
我正在开发一个需要多个权限的应用程序,所以我添加了它并做了 marshmallow 代码,但问题是当我在 marshmallow 中重新打开一个应用程序时它总是请求权限,我只想问如果它没有被授予。
请帮我编写代码,在此先感谢!
权限系统已更改。但是这里有一个很好的解释如何正确处理它。
https://developer.android.com/training/permissions/requesting.html
这样,如果用户授予权限,对话框只会打开一次。如果他拒绝,您可以选择在下次请求许可时显示解释。
他们还有一个值得一读的最佳实践部分:
https://developer.android.com/training/permissions/best-practices.html
public Boolean marshmallowPermission(){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkPermission()) {
Toast.makeText(this,"Permission already granted.", Toast.LENGTH_SHORT).show();
} else {
requestPermission();
//marshmallowRequest();
}
}
return true;
}
@TargetApi(Build.VERSION_CODES.M)
public boolean checkPermission(){
int phone= checkSelfPermission(android.Manifest.permission.CALL_PHONE);
if (phone == PackageManager.PERMISSION_GRANTED ){
return true;
} else {
return false;
}
}
@TargetApi(Build.VERSION_CODES.M)
private void requestPermission(){
if (shouldShowRequestPermissionRationale(android.Manifest.permission.CALL_PHONE)){
Toast.makeText(this," Permission must be needed which allows you to access an app. Please allow in App Settings for additional functionality.", Toast.LENGTH_LONG).show();
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("package", this.getPackageName(), null);
intent.setData(uri);
this.startActivity(intent);
} else {
requestPermissions(new String[]{android.Manifest.permission.CALL_PHONE},101);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case 101:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(this,"Permission Granted, Now you can access an app.",Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this,"Permission Denied, You cannot access call.", Toast.LENGTH_LONG).show();
}
break;
}
}
只需检查权限,必要时才请求。
在
的帮助下检查权限
checkSelfPermission(Manifest.permission.READ_CONTACTS)
检查权限是否已经授予
if (checkSelfPermission(Manifest.permission.READ_CONTACTS)
!= PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[]{Manifest.permission.READ_CONTACTS},
MY_PERMISSIONS_REQUEST_READ_CONTACTS);
// MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
// app-defined int constant
return;
}
然后处理权限
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_READ_CONTACTS: {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! do the
} else {
// permission denied, Disable the
// functionality that depends on this permission.
}
return;
}
}}
按照以下步骤操作:
- 创建一组您需要访问的权限。
- 通过group/array检查是否授予权限
示例代码供您参考:
public static boolean hasPermissions(Context context, String[]permissions) {
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && context != null && permissions != null) {
for (String permission : permissions) {
if (ActivityCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
return false;
}
}
}
return true;
以上代码稍后将检查您的权限组,将这些全部传递一次
int PERMISSION_ALL = 1;
//create all permissions array
String[] PERMISSIONS = {Manifest.permission.READ_CONTACTS, //all your permissions};
//Now check whether permissions are granted or not
if(!hasPermissions(this, PERMISSIONS)){
ActivityCompat.requestPermissions(this, PERMISSIONS, PERMISSION_ALL);
}
希望这对你有用。
我正在开发一个需要多个权限的应用程序,所以我添加了它并做了 marshmallow 代码,但问题是当我在 marshmallow 中重新打开一个应用程序时它总是请求权限,我只想问如果它没有被授予。
请帮我编写代码,在此先感谢!
权限系统已更改。但是这里有一个很好的解释如何正确处理它。
https://developer.android.com/training/permissions/requesting.html
这样,如果用户授予权限,对话框只会打开一次。如果他拒绝,您可以选择在下次请求许可时显示解释。
他们还有一个值得一读的最佳实践部分:
https://developer.android.com/training/permissions/best-practices.html
public Boolean marshmallowPermission(){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkPermission()) {
Toast.makeText(this,"Permission already granted.", Toast.LENGTH_SHORT).show();
} else {
requestPermission();
//marshmallowRequest();
}
}
return true;
}
@TargetApi(Build.VERSION_CODES.M)
public boolean checkPermission(){
int phone= checkSelfPermission(android.Manifest.permission.CALL_PHONE);
if (phone == PackageManager.PERMISSION_GRANTED ){
return true;
} else {
return false;
}
}
@TargetApi(Build.VERSION_CODES.M)
private void requestPermission(){
if (shouldShowRequestPermissionRationale(android.Manifest.permission.CALL_PHONE)){
Toast.makeText(this," Permission must be needed which allows you to access an app. Please allow in App Settings for additional functionality.", Toast.LENGTH_LONG).show();
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("package", this.getPackageName(), null);
intent.setData(uri);
this.startActivity(intent);
} else {
requestPermissions(new String[]{android.Manifest.permission.CALL_PHONE},101);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case 101:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(this,"Permission Granted, Now you can access an app.",Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this,"Permission Denied, You cannot access call.", Toast.LENGTH_LONG).show();
}
break;
}
}
只需检查权限,必要时才请求。
在
的帮助下检查权限checkSelfPermission(Manifest.permission.READ_CONTACTS)
检查权限是否已经授予
if (checkSelfPermission(Manifest.permission.READ_CONTACTS)
!= PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[]{Manifest.permission.READ_CONTACTS},
MY_PERMISSIONS_REQUEST_READ_CONTACTS);
// MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
// app-defined int constant
return;
}
然后处理权限
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_READ_CONTACTS: {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! do the
} else {
// permission denied, Disable the
// functionality that depends on this permission.
}
return;
}
}}
按照以下步骤操作:
- 创建一组您需要访问的权限。
- 通过group/array检查是否授予权限
示例代码供您参考:
public static boolean hasPermissions(Context context, String[]permissions) {
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && context != null && permissions != null) {
for (String permission : permissions) {
if (ActivityCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
return false;
}
}
}
return true;
以上代码稍后将检查您的权限组,将这些全部传递一次
int PERMISSION_ALL = 1;
//create all permissions array
String[] PERMISSIONS = {Manifest.permission.READ_CONTACTS, //all your permissions};
//Now check whether permissions are granted or not
if(!hasPermissions(this, PERMISSIONS)){
ActivityCompat.requestPermissions(this, PERMISSIONS, PERMISSION_ALL);
}
希望这对你有用。