Android4.4 SystemUI加入Dialog弹窗

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。。

。