Android自定义控件——自定义控件双击事件

来源：互联网发布：app软件定制编辑：程序博客网时间：2024/06/05 13:24
本文介绍给自定义的控件加统一的双击监听事件，当然也可以对原生控件加本文通过一个Button来演示原理很简单，自定义一个接口 DoubleClickListener，定义抽象方法  onDoubleClick(View view)；在touch事件中对 Button做具体的计算，通过两次计算系统时间的毫秒数的差值来判断是否是是双击。自定义Button：继承Button，构造方法中初始化clicktime的值，touch事件计算，定义接口和方法，定义给Button设置接口的方法public class DoubleButton extends Button {DoubleClickListener mDoubleClickListener;private long mClick_time;public DoubleButton(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);init();}public DoubleButton(Context context, AttributeSet attrs) {super(context, attrs);init();}public DoubleButton(Context context) {super(context);init();}private void init() {mClick_time = System.currentTimeMillis();Log.i("ABC", "mClick_time=" + System.currentTimeMillis());}        //<span style="font-family: 'Microsoft YaHei';font-size:14px;">给Button监听接口的方法</span>public void setOnDoubleClickListener(final DoubleClickListener mDoubleClickListener) {this.mDoubleClickListener = mDoubleClickListener;}@Overridepublic boolean onTouchEvent(MotionEvent event) {if (event.getAction() == MotionEvent.ACTION_DOWN) {long newClickTime = System.currentTimeMillis();Log.i("ABC", "newClickTime=" + System.currentTimeMillis());Log.i("ABC", "cha=" + (newClickTime - mClick_time));if (newClickTime - mClick_time < 1000) {//调用双击事件mDoubleClickListener.onDoubleClick(this);}mClick_time = newClickTime;}return super.onTouchEvent(event);}        //接口interface DoubleClickListener {public abstract void onDoubleClick(View view);}}在界面中使用Xml中:<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent" >    <com.example.test.DoubleButton        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_alignParentTop="true"        android:layout_marginLeft="30dp"        android:layout_marginTop="26dp"        android:text="Button" /></RelativeLayout>Activity中:public class MainActivity extends ActionBarActivity {DoubleButton mButton;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mButton = (DoubleButton) findViewById(R.id.button1);//监听，是不是和onclick一样啊好用啊mButton.setOnDoubleClickListener(new DoubleClickListener() {@Overridepublic void onDoubleClick(View view) {// TODO Auto-generated method stubToast.makeText(getBaseContext(), "Down", Toast.LENGTH_SHORT).show();}});}}顺便加一个好用的防止连续点击的方法,加在点击事件中就可以用了。麻麻再也不用担心你的按钮被人狂点了private static boolean isClick() {long time = System.currentTimeMillis();long timeDur = time - mLastTime;if (timeDur > 500) {mLastTime = time;return true;} else {return false;}}
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