android 5.1状态栏添加截屏功能

  本文是参考http://blog.csdn.net/zhang_jun_xiang/article/details/50055085博文写的，主要是为了方便记录下自己学习的过程。

1.在/frameworks/base/packages/SystemUI/res/values/config.xml中添加takescreenshot

<stringname="quick_settings_tiles_default"translatable="false">wifi,bt,inversion,cell,airplane,rotation,flashlight,

location,cast,takescreenshot,hotspot,hotknot,audioprofile</string>



2.在string.xml中添加<stringname="take_screenshot">Take Screen</string>和<stringname="take_screenshot">截屏</string>



3.修改SystemUI/src/com/android/systemui/screenshot/GlobalScreenshot.java

将class GlobalScreenshot改为public class GlobalScreenshot

将 void takeScreenshot() 改为public voidtakeScreenshot()



4.在SystemUI/src/com/android/systemui/qs/tiles/中添加TakeScreenShotTitle.java

/*
* Copyright (C) 2014 MediaTek Inc.
* Modification based on code covered by the mentioned copyright
* and/or permission notice(s).
*/
/*
* Copyright (C) 2014 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.qs.tiles;

import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.provider.Settings;
import android.util.Log;
import android.os.Handler ;
import android.os.Message ;
import android.os.Messenger ;
import android.view.View;
import android.view.ViewGroup;
import java.lang.Exception ;
import com.android.systemui.screenshot.* ;
import com.android.systemui.R;
import com.android.systemui.qs.QSTile.State;
import com.android.systemui.qs.QSTile.BooleanState;
import com.android.systemui.qs.QSDetailItems;
import com.android.systemui.qs.QSDetailItems.Item;
import com.android.systemui.qs.QSTile;
import com.android.systemui.qs.QSTileView;
import com.android.systemui.qs.SignalTileView;
import com.android.systemui.statusbar.phone.QSTileHost;
import com.android.systemui.statusbar.policy.NetworkController;
import com.android.systemui.statusbar.policy.NetworkController.AccessPointController;
import com.android.systemui.statusbar.policy.NetworkController.AccessPointController.AccessPoint;
import com.android.systemui.statusbar.policy.NetworkController.NetworkSignalChangedCallback;

/** pang test Quick settings tile: TakeScreenShotTitle **/
public class TakeScreenShotTitle extends QSTile<QSTile.BooleanState> {
private static final String TAG = "TakeScreenShotTile";

private static final int TAKE_SCREEN_SHOT_MESSAGE = 10000;
private static GlobalScreenshot mScreenshot;

private int mAudioState = R.drawable.ic_hotknot_qs_on;

public TakeScreenShotTitle(Host host) {
super(host);
}

@Override
protected BooleanState newTileState() {
return new BooleanState();
}

@Override
public void setListening(boolean listening) {
}

@Override
protected void handleClick() {
mHost.startSettingsActivity(new Intent());
Message msg = mHandler.obtainMessage(TAKE_SCREEN_SHOT_MESSAGE);
mHandler.sendMessageDelayed(msg,1000);
}

protected void handleLongClick() {
mHost.startSettingsActivity(new Intent());
Message msg = mHandler.obtainMessage(TAKE_SCREEN_SHOT_MESSAGE);
mHandler.sendMessageDelayed(msg,1000);
}

@Override
protected void handleUpdateState(BooleanState state, Object arg) {
state.label = mContext.getString(R.string.take_screenshot);
state.visible = true;
state.icon = ResourceIcon.get(mAudioState);
}

Handler mHandler = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
case TAKE_SCREEN_SHOT_MESSAGE:

final Messenger callback = msg.replyTo;
if (mScreenshot == null) {
mScreenshot = new GlobalScreenshot(mContext);
}
mScreenshot.takeScreenshot(new Runnable() {
@Override public void run() {
Message reply = Message.obtain(null, 1);
try {
if(callback != null){
callback.send(reply);
}
}catch(Exception e){
}
}
}, msg.arg1 > 0, msg.arg2 > 0);
break;
default:
break;
}
}
};

}

5.在SystemUI/src/com/android/systemui/statusbar/phone/QSTileHost.java中添加

importcom.android.systemui.qs.tiles.TakeScreenShotTitle ;

在private QSTile<?> createTile(String tileSpec)中添加

else if(tileSpec.equals("takescreenshot")) return new TakeScreenShotTitle(this);



 6.make -j8 编译，编完成后刷机