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/* -*- Mode: java; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* xscreensaver, Copyright (c) 2016 Jamie Zawinski <jwz@jwz.org>
* and Dennis Sheil <dennis@panaceasupplies.com>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. No representations are made about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*
* This is the XScreenSaver "application" that just brings up the
* Live Wallpaper preferences.
*/
package org.jwz.xscreensaver;
import android.app.WallpaperManager;
import android.content.ComponentName;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.provider.Settings;
import android.Manifest;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.os.Build;
import android.content.pm.PackageManager;
public class Activity extends android.app.Activity
implements View.OnClickListener {
private boolean wallpaperButtonClicked, daydreamButtonClicked;
private final static int MY_REQ_READ_EXTERNAL_STORAGE = 271828;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// openList();
setContentView(R.layout.activity_xscreensaver);
wallpaperButtonClicked = false;
daydreamButtonClicked = false;
findViewById(R.id.apply_wallpaper).setOnClickListener(this);
findViewById(R.id.apply_daydream).setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.apply_wallpaper:
wallpaperButtonClicked();
break;
case R.id.apply_daydream:
daydreamButtonClicked();
break;
}
}
// synchronized when dealing with wallpaper state - perhaps can
// narrow down more
private synchronized void withProceed() {
if (daydreamButtonClicked) {
String action;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
action = Settings.ACTION_DREAM_SETTINGS;
} else {
action = Settings.ACTION_DISPLAY_SETTINGS;
}
startActivity(new Intent(action));
} else if (wallpaperButtonClicked) {
startActivity(new Intent(WallpaperManager.ACTION_LIVE_WALLPAPER_CHOOSER));
}
}
private void wallpaperButtonClicked() {
wallpaperButtonClicked = true;
checkPermission();
}
private void daydreamButtonClicked() {
daydreamButtonClicked = true;
checkPermission();
}
void checkPermission() {
// RES introduced in API 16
String permission = Manifest.permission.READ_EXTERNAL_STORAGE;
if (havePermission(permission)) {
withProceed();
} else {
noPermission(permission);
}
}
private void noPermission(String permission) {
int myRequestCode;
myRequestCode = MY_REQ_READ_EXTERNAL_STORAGE;
if (permissionsDeniedRationale(permission)) {
showDeniedRationale();
} else {
requestPermission(permission, myRequestCode);
}
}
private boolean permissionsDeniedRationale(String permission) {
boolean rationale = ActivityCompat.shouldShowRequestPermissionRationale(this,
permission);
return rationale;
}
private void requestPermission(String permission, int myRequestCode) {
ActivityCompat.requestPermissions(this,
new String[]{permission},
myRequestCode);
// myRequestCode is an app-defined int constant.
// The callback method gets the result of the request.
}
// TODO: This method should be asynchronous, and not block the thread
private void showDeniedRationale() {
withProceed();
}
boolean havePermission(String permission) {
if (Build.VERSION.SDK_INT < 16) {
return true;
}
if (permissionGranted(permission)) {
return true;
}
return false;
}
private boolean permissionGranted(String permission) {
boolean check = ContextCompat.checkSelfPermission(this, permission) ==
PackageManager.PERMISSION_GRANTED;
return check;
}
public void proceedIfPermissionGranted(int[] grantResults) {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
withProceed();
} else if (grantResults.length > 0) {
withProceed();
}
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_REQ_READ_EXTERNAL_STORAGE:
proceedIfPermissionGranted(grantResults);
}
}
}
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