Android8.1 SystemUI QuickSettings增加截图按钮

Android8.1 SystemUI QuickSettings增加截图按钮

之前在6.0上做过这个功能，8.1对比6.0代码上有部分重构，增加按钮也方便了很多，6.0需要添加一个TileController，这个controller是一个interface，还要一个TileControllerImpl，类似截图这样的按钮其实在controller中是没有逻辑的，但是也必须要有controller，不是很友好。Google工程师可能也是考虑了这一点，8.1重构了这部分的代码。
首先在配置文件中增加screenshot
res/values/config.xml ：

    <string name="quick_settings_tiles_stock" translatable="false">
        wifi,cell,battery,dnd,flashlight,rotation,bt,airplane,location,hotspot,inversion,saver,work,cast,night,screenshot
    string>

8.1增加了修改qs的的功能，这样增加默认是不显示出来的，需要在手机设设置一下。其实这么默认选项也是读取配置文件的
res/values/config.xml ：

    <string name="quick_settings_tiles_default" translatable="false">
        wifi,cell,bt,dnd,flashlight,rotation,battery,airplane,cast,screenshot
    string>

增加一个ScreenshotTile.java

public class ScreenshotTile extends QSTileImpl {
    private static final String TAG = "ScreenShotTile";
    private static final int SCREEN_SHOT_MESSAGE = 10000;
    private static GlobalScreenshot mScreenshot;

    Handler mHandler = new Handler() {
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case 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(RemoteException e){
                            }
                        }
                    }, msg.arg1 > 0, msg.arg2 > 0);
                    break;
                default:
                    break;
            }
        }
    };

    public ScreenshotTile(QSHost host) {
        super(host);
    }

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

    @Override
    protected void handleClick() {
        mHost.collapsePanels();
        Message msg = mHandler.obtainMessage(SCREEN_SHOT_MESSAGE);
        mHandler.sendMessageDelayed(msg,500);

    }

    @Override
    protected void handleUpdateState(BooleanState state, Object arg) {
        state.icon = ResourceIcon.get(R.drawable.screenshot);
        state.label = mContext.getString(R.string.quick_settings_screen_shot);
        state.contentDescription = mContext.getString(R.string.quick_settings_screen_shot);
    }

    @Override
    public int getMetricsCategory() {
        return 0;
    }

    @Override
    public Intent getLongClickIntent() {
        return null;
    }

    @Override
    protected void handleSetListening(boolean listening) {

    }

    @Override
    public CharSequence getTileLabel() {
        return mContext.getString(R.string.quick_settings_screen_shot);
    }

}

在创建Tile的地方添加ScreenShotTile
src/com/android/systemui/qs/tileimpl/QSFactoryImpl.java -> createTile():

else if (tileSpec.equals("nfc")) return new NfcTile(mHost);
//增加ScreenShotTile begin
        else if (tileSpec.equals("screenshot")) return new ScreenshotTile(mHost);
//增加ScreenShotTile end
        /// M: Customize the quick settings tiles for operator. @{
        else if (tileSpec.equals("dataconnection") && !SIMHelper.isWifiOnlyDevice())
            return new MobileDataTile(mHost);

运行一下，看看是不是已经添加好了呢。