此弹窗为开机SystemUI的显示弹窗：
首先。在SystemUI的源代码文件夹加入源代码类文件，文件夹为frameworks/base/packages/SystemUI/src/com/android/systemui/settings，类名暂取为UpdateUI.java内容例如以下：
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.systemui.settings;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningTaskInfo;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.XXDialog;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnDismissListener;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.UserHandle;
import android.provider.Settings;
import android.util.Slog;
import android.view.View;
import android.view.MotionEvent;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.TextView;
import com.android.systemui.R;
import com.android.systemui.SystemUI;
import android.app.XXDialog.ButtonClickListener;
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.List;
public class UpdateUI extends SystemUI {
static final String TAG = "UpdateUI";
static final String ACTION = "android.hm.WITH_UPGRADE_ICON";
static final String sourceFlag = "from_check_service";
static final String forceFlag = "force";
static final String Update = "com.XX.ota.MainActivity";
private static boolean fromService = false;
private static boolean forceUpdate = false;
private String vers;
private SharedPreferences sp;
XXDialog mUpdateDialog;
TextView mUpdateTextView;
private long mScreenOffTime = -1;
public void start() {
// Register for Intent broadcasts for...
IntentFilter filter = new IntentFilter();
filter.addAction(ACTION);
mContext.registerReceiver(mIntentReceiver, filter, null, null);
}
private boolean shouldShow(final String str) {
//此处处理广播过来的数据字段，如若与已存在xml的数据同样，则不再提示弹窗，否则弹窗并更新xml数据。
sp = mContext.getSharedPreferences("version", Context.MODE_PRIVATE);
String version = sp.getString("version", "");
if (!str.equals(version)) {
Editor ed = sp.edit();
ed.putString("version", vers);
ed.commit();
return true;
}
return false;
}
private boolean getTopWindow() {
ActivityManager am = (ActivityManager)(mContext).getSystemService(Context.ACTIVITY_SERVICE);
ComponentName cn = am.getRunningTasks(1).get(0).topActivity;
Slog.e(TAG, "activity: " + cn.getClassName().toString());
if (cn.getClassName().contains(Update))
return true;
return false;
}
private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(ACTION)) {
fromService = intent.getBooleanExtra(sourceFlag, false);
forceUpdate = intent.getBooleanExtra(forceFlag, false);
vers = intent.getStringExtra("version");
if (fromService && !getTopWindow()) {
if (forceUpdate) {
showUpdateDialog(forceUpdate);
return;
} else if (shouldShow(vers)) {
showUpdateDialog(forceUpdate);
return;
}
}
}
}
};
void dismissUpdateDialog() {
if (mUpdateDialog != null) {
mUpdateDialog.dismiss();
mUpdateDialog = null;
}
}
void showUpdateDialog(final boolean bool) {
Slog.e(TAG, "==== show update dialog ====");
//此Dialog为第三方加入的于framework的标准dialog，在android.app.XXDialog中。
XXDialog.Builder b = new XXDialog.Builder(mContext);
XXDialog dialog = b.create();
dialog.setRightButtonName(mContext.getString(R.string.sure));
dialog.setLeftButtonName(mContext.getString(R.string.cancel));
dialog.setContent(mContext.getString(R.string.update_notice));
dialog.setTitle(mContext.getString(R.string.system_update));
dialog.notCloseOnTouch();
if (bool) {
dialog.setLeftButtonVisible(false);
dialog.setMiddleLineVisible(false);
}
final Intent intent = new Intent();
ComponentName comp = new ComponentName("com.XX.ota",
"com.XX.ota.MainActivity");
intent.setComponent(comp);
intent.setAction("android.intent.action.VIEW");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (intent.resolveActivity(mContext.getPackageManager()) != null) {
dialog.setClickListener(new ButtonClickListener(){
@Override
public void rightClick() {
mContext.startActivityAsUser(intent, UserHandle.CURRENT);
dismissUpdateDialog();
}
@Override
public void leftClick() {
if (!bool)
dismissUpdateDialog();
}
});
}
dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
dialog.getWindow().getAttributes().privateFlags |=
WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS;
dialog.show();
mUpdateDialog = dialog;
}
}
而后。将该类加入至SystemUI开机启动的service类名列表中：
改动文件frameworks/base/packages/SystemUI/src/com/android/systemui/SystemUIService.java
private final Class<?>[] SERVICES = new Class[] {
com.android.systemui.recent.Recents.class,
com.android.systemui.statusbar.SystemBars.class,
com.android.systemui.usb.StorageNotification.class,
com.android.systemui.power.PowerUI.class,
com.android.systemui.media.RingtonePlayer.class,
com.android.systemui.settings.SettingsUI.class,
com.android.systemui.settings.UpdateUI.class,
com.android.systemui.net.NetWorkWarningUI.class,
};
至此。加入完成。。
。