如何解决无法通过 Intent 打开应用程序的设置
我正在处理 android 应用程序权限,如果用户永久拒绝权限,我需要将用户移动到应用程序设置以手动启用权限。 所有代码都工作正常,但是当我开始意图将用户移动到我的应用程序的设置时,我发现活动未找到异常。
这里是例外
android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.settings.APPLICATION_DETAILS_SETTINGS dat=Package:com.e.permisions }
这是我的代码
package com.e.permisions;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import android.Manifest;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Settings;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
Button request;
String[] permissions = {Manifest.permission.READ_EXTERNAL_STORAGE};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initilising buttons
request = findViewById(R.id.request);
request.setonClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (ContextCompat.checkSelfPermission(getApplicationContext(),Manifest.permission.READ_EXTERNAL_STORAGE)
== PackageManager.PERMISSION_GRANTED) {
//Todo: Code to do what if permissions granted...
Toast.makeText(MainActivity.this,"Permissions Granted",Toast.LENGTH_SHORT).show();
} else {
if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this,Manifest.permission.READ_EXTERNAL_STORAGE)) {
//Todo: usually we should show alert why should need these permissions...
new AlertDialog.Builder(MainActivity.this)
.setTitle("Why these Permissions?")
.setMessage("For App functionality we need these permissions..")
.setNegativeButton("Cancel",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface,int i) {
dialogInterface.dismiss();
}
})
.setPositiveButton("OK",int i) {
//Todo: request permissions when click ok
ActivityCompat.requestPermissions(MainActivity.this,permissions,123);
}
})
.setCancelable(false)
.create().show();
} else {
//Todo: request permissions
ActivityCompat.requestPermissions(MainActivity.this,123);
}
}
}
});
}
@Override
public void onRequestPermissionsResult(int requestCode,@NonNull String[] permissions,@NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode,grantResults);
if (requestCode == 123) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//Todo: code to do what if permissions are Granted...
Toast.makeText(this,"Permissions are Granted",Toast.LENGTH_SHORT).show();
} else if (!ActivityCompat.shouldShowRequestPermissionRationale(this,Manifest.permission.READ_EXTERNAL_STORAGE)) {
//Todo: if permissions Denied permanently by user..
gotoSettings();
} else {
//Todo: what to do if denied
Toast.makeText(this,"Permissions Denied",Toast.LENGTH_SHORT).show();
}
}
}
private void gotoSettings() {
new AlertDialog.Builder(this)
.setTitle("Go to Settings")
.setMessage("enable the permission")
.setPositiveButton("Ok",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface,int i) {
Toast.makeText(MainActivity.this,"Moving to Settings",Toast.LENGTH_SHORT).show();
try {
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("Package",getPackageName(),null);
intent.setData(uri);
startActivity(intent);
} catch (Exception e) {
Toast.makeText(MainActivity.this,"Failed to open Settings\n" + e,Toast.LENGTH_LONG).show();
Log.d("error",e.toString());
}
}
}).create().show();
}
}
还会更新清单文件中的权限详细信息。 任何人都可以帮助解决此代码的问题。
提前致谢。
解决方法
try this way ...
private void gotoSettings() {
new AlertDialog.Builder(this)
.setTitle("Go to Settings")
.setMessage("enable the permission")
.setPositiveButton("Ok",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface,int i) {
Toast.makeText(MainActivity.this,"Moving to Settings",Toast.LENGTH_SHORT).show();
try {
Intent intent = new Intent();
intent.setAction(
Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("package",BuildConfig.APPLICATION_ID,null);
intent.setData(uri);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
} catch (Exception e) {
Toast.makeText(MainActivity.this,"failed to open Settings\n" + e,Toast.LENGTH_LONG).show();
Log.d("error",e.toString());
}
}
}).create().show();
}
,
问题是你给了“包裹”
Uri uri = Uri.fromParts("Package",getPackageName(),null);
由于区分大小写,它没有找到视图,请尝试给定 package
Uri uri = Uri.fromParts("package",null);
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