Java 权限已在设置中授予，但将被忽略
在新安装时，当我单击按钮时，它将跳过所有内容，直到Java 权限已在设置中授予，但将被忽略,java,android,permissions,Java,Android,Permissions,在新安装时，当我单击按钮时，它将跳过所有内容，直到 Toast.makeText(getBaseContext(), "Unable to get Permission", Toast.LENGTH_LONG).show(); 它应该请求权限，但出于某种原因，我第一次单击按钮时，它只会给我祝酒词，第二次尝试时，它请求，然后转到可以启用权限的设置。启用权限后，当您再次单击按钮时，它仍会要求启用权限。我检查了手机的设置，手机已启用，但除了第一次点击外，每次点击都会要求启用。我在清单中也有。我在AP
Toast.makeText(getBaseContext(), "Unable to get Permission", Toast.LENGTH_LONG).show();
}如果您只想识别您的权限，而不需要在运行时请求权限，我找到了一个临时解决方案。右键单击应用程序文件夹，然后选择“打开模块设置”。转到“口味”选项卡并将“目标Sdk版本”设置为API 22。据我所知，这将授予您安装和运行应用程序的权限。到目前为止，它运行良好，没有缺点。如果有问题，我会更新此文件。如果您只想识别您的权限，而不需要在运行时请求权限，我已经找到了临时解决方案。右键单击应用程序文件夹，然后选择“打开模块设置”。转到“口味”选项卡并将“目标Sdk版本”设置为API 22。据我所知，这将授予您安装和运行应用程序的权限。到目前为止，它运行良好，没有缺点。我会更新这个，如果我有和问题。
package com.example.brett.brightness;
import android.Manifest;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.graphics.PixelFormat;
import android.net.Uri;
import android.os.IBinder;
import android.provider.Settings;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.SlidingDrawer;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private static SeekBar seekBar;
private static TextView textView;
private static final int SYSTEM_ALERT_WINDOW_PERMISSION_CONSTANT = 100;
private static final int REQUEST_PERMISSION_SETTING = 101;
private SharedPreferences permissionStatus;
private boolean sentToSettings = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
permissionStatus = getSharedPreferences("permissionStatus", MODE_PRIVATE);
setContentView(R.layout.activity_main);
seekBar = (SeekBar) findViewById(R.id.seekBar);
textView = (TextView) findViewById(R.id.progressText);
seekBar.setMax(255);
Button fab = (Button) findViewById(R.id.button2);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.SYSTEM_ALERT_WINDOW) != PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, Manifest.permission.SYSTEM_ALERT_WINDOW)) {
//Show Information about why you need the permission
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("Need Storage Permission");
builder.setMessage("This app needs storage permission.");
builder.setPositiveButton("Grant", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.SYSTEM_ALERT_WINDOW}, SYSTEM_ALERT_WINDOW_PERMISSION_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.SYSTEM_ALERT_WINDOW, 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(MainActivity.this);
builder.setTitle("Need Overlay Permission");
builder.setMessage("This app needs overlay 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", getPackageName(), null);
intent.setData(uri);
startActivityForResult(intent, REQUEST_PERMISSION_SETTING);
Toast.makeText(getBaseContext(), "Go to Permissions to Grant Overlay", 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
ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.SYSTEM_ALERT_WINDOW}, SYSTEM_ALERT_WINDOW_PERMISSION_CONSTANT);
}
SharedPreferences.Editor editor = permissionStatus.edit();
editor.putBoolean(Manifest.permission.SYSTEM_ALERT_WINDOW, true);
editor.commit();
} else {
//You already have the permission, just go ahead.
proceedAfterPermission();
}
}
});
}
private void proceedAfterPermission() {
//We've got the permission, now we can proceed further
Toast.makeText(getBaseContext(), "We got the Overlay Permission", Toast.LENGTH_LONG).show();
//Log.d(TAG, "sending message");
Intent intent = new Intent(this, DrawOverAppsService.class);
startService(intent);
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == SYSTEM_ALERT_WINDOW_PERMISSION_CONSTANT) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//The External Storage Write Permission is granted to you... Continue your left job...
proceedAfterPermission();
} else {
if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, Manifest.permission.SYSTEM_ALERT_WINDOW)) {
//Show Information about why you need the permission
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("Need Overlay Permission");
builder.setMessage("This app needs overlay permission");
builder.setPositiveButton("Grant", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.SYSTEM_ALERT_WINDOW}, SYSTEM_ALERT_WINDOW_PERMISSION_CONSTANT);
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();
} else {
Toast.makeText(getBaseContext(), "Unable to get Permission", Toast.LENGTH_LONG).show();
}
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_PERMISSION_SETTING) {
if (ActivityCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.SYSTEM_ALERT_WINDOW) == PackageManager.PERMISSION_GRANTED) {
//Got Permission
proceedAfterPermission();
}
}
}
@Override
protected void onPostResume() {
super.onPostResume();
if (sentToSettings) {
if (ActivityCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.SYSTEM_ALERT_WINDOW) == PackageManager.PERMISSION_GRANTED) {
//Got Permission
proceedAfterPermission();
}
}
}