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