我有一个旧的项目与目标sdk 21,现在我必须把运行时权限,所以任何人都可以建议我任何最好的和简单的方法来做到这一点。最好的方式来处理运行时权限android
-1
A
回答
1
您可以在初始屏幕或第一屏幕上处理权限。
如果多个权限然后处理所有的一次。
如果用户拒绝任何权限,则显示消息需要一些权限。
希望它能帮助你。
以下是如何处理多个权限的示例。
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
if(checkAndRequestPermissions()){
//all permission granted
}else{
//require all permission.
}
}
private boolean checkAndRequestPermissions() {
int camerapermission = ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA);
int phonestate = ContextCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE);
int location = ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION);
int recordaudio = ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO);
int permissionLocation = ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE);
List<String> listPermissionsNeeded = new ArrayList<>();
if (camerapermission != PackageManager.PERMISSION_GRANTED) {
listPermissionsNeeded.add(Manifest.permission.CAMERA);
}
if (phonestate != PackageManager.PERMISSION_GRANTED) {
listPermissionsNeeded.add(Manifest.permission.READ_PHONE_STATE);
}
if (location != PackageManager.PERMISSION_GRANTED) {
listPermissionsNeeded.add(Manifest.permission.ACCESS_FINE_LOCATION);
}
if (recordaudio != PackageManager.PERMISSION_GRANTED) {
listPermissionsNeeded.add(Manifest.permission.RECORD_AUDIO);
}
if (permissionLocation != PackageManager.PERMISSION_GRANTED) {
listPermissionsNeeded.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
}
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) {
switch (requestCode) {
case REQUEST_ID_MULTIPLE_PERMISSIONS: {
Map<String, Integer> perms = new HashMap<>();
perms.put(Manifest.permission.CAMERA, PackageManager.PERMISSION_GRANTED);
perms.put(Manifest.permission.READ_PHONE_STATE, PackageManager.PERMISSION_GRANTED);
perms.put(Manifest.permission.ACCESS_FINE_LOCATION, PackageManager.PERMISSION_GRANTED);
perms.put(Manifest.permission.RECORD_AUDIO, PackageManager.PERMISSION_GRANTED);
perms.put(Manifest.permission.WRITE_EXTERNAL_STORAGE, 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.CAMERA) == PackageManager.PERMISSION_GRANTED
&& perms.get(Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_GRANTED
&& perms.get(Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
&& perms.get(Manifest.permission.RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED
&& perms.get(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED
) {
Log.d(TAG, "camera & location services permission granted");
// here you can do your logic all Permission Success Call
moveToNxtScreen();
} else {
Log.d(TAG, "Some permissions are not granted ask again ");
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.CAMERA) || ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
showDialogOK("Some Permissions are required for Open Camera",
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.
dialog.dismiss();
break;
}
}
});
} else {
explain("You need to give some mandatory permissions to continue. Do you want to go to app settings?");
}
}
}
}
}
}
private void showDialogOK(String message, DialogInterface.OnClickListener okListener) {
new AlertDialog.Builder(this)
.setMessage(message)
.setPositiveButton("OK", okListener)
.setNegativeButton("Cancel", okListener)
.create()
.show();
}
private void explain(String msg) {
final android.support.v7.app.AlertDialog.Builder dialog = new android.support.v7.app.AlertDialog.Builder(this);
dialog.setMessage(msg)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface paramDialogInterface, int paramInt) {
Utils.startInstalledAppDetailsActivity(LoginActivity.this);
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface paramDialogInterface, int paramInt) {
dialog.create().dismiss();
finish();
}
});
dialog.show();
}
1
创建两个变量,如
private static final int REQUEST_CODE_PERMISSION = 1;
String mPermission = Manifest.permission.ACCESS_FINE_LOCATION;
后创建方法类似这样的
private void getPermission() {
if(Build.VERSION.SDK_INT>= 23) {
if (checkSelfPermission(mPermission) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{mPermission,
},
REQUEST_CODE_PERMISSION);
return;
}
else
{
/* your code if permission already access
}
}
}
覆盖后onRequestPermissionsResult这样
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
Log.e("Req Code", "" + requestCode);
if (requestCode == REQUEST_CODE_PERMISSION) {
if (grantResults.length == 1 &&
grantResults[0] == MockPackageManager.PERMISSION_GRANTED) {
methodRedirect();
}
else{
this.getPermission();
}
}
}
这样即使用户拒绝权限的方法,它会再次显示。
您可以像这样管理多个权限。
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Thanx Sachin,但如果用户拒绝设置后启动画面的权限?所以我已经到处检查。 –
然后你需要检查每次授予权限或不授权。如果权限被拒绝,则需要简单的显示烤面包权限和开放权限设定画面。检查如何打开权限屏幕http://stackoverflow.com/a/32983128/3416642 – Sach