1.onclick方法
缺点：不能在web view打开的网页中监听
//MainActivity.java页面
package com.example.aaa;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.ViewGroup;
import com.example.aaa.MainActivity;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
import android.widget.Toast;
import android.view.LayoutInflater;
import android.widget.LinearLayout;
public class MainActivity extends ActionBarActivity {
private boolean waitDouble = true;
private static final int DOUBLE_CLICK_TIME = 350;
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
this.setContentView(R.layout.activity_main);
//TextView hello = (TextView)findViewById(R.id.q);
LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
LinearLayout hello = (LinearLayout)findViewById(R.id.q);
//LinearLayout hello = (LinearLayout)findViewById(R.id.q);
hello.setOnClickListener(listener);
}
OnClickListener listener = new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(waitDouble == true){
waitDouble = false;
Thread thread = new Thread(){
@Override
public void run(){
try {
sleep(DOUBLE_CLICK_TIME);
if(waitDouble == false){
waitDouble = true;
singleClick();
}
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
thread.start();
}else{
waitDouble = true;
doubleClick();
}
}
};
private void singleClick(){
System.out.println("single");
}
private void doubleClick(){
Toast.mak``
Text(MainActivity.this, "双击", Toast.LENGTH_LONG)
.show();
}
}
//activity_main.xml页面
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/q"
android:descendantFocusability="blocksDescendants"
android:orientation="vertical" >
<TextView
android:id="@+id/c"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="hello" />
</LinearLayout>
源码下载：http://download.csdn.net/download/qq_25252769/9958627
2.onTouch方法
可以在web view打开的页面使用双击事件
//MainActivity.java页面
package com.example.full;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import com.example.full.R;
import com.example.full.MainActivity;
import android.app.Activity;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.TextView;
import android.widget.Toast;
import android.view.LayoutInflater;
import android.widget.LinearLayout;
import android.app.ActivityManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.view.KeyEvent;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.view.Window;
import android.view.MotionEvent;
public class MainActivity extends ActionBarActivity{
private boolean waitDouble = true;
private static final int DOUBLE_CLICK_TIME = 350;
private final int DOUBLE_TAP_TIMEOUT = 200;
private MotionEvent mCurrentDownEvent;
private MotionEvent mPreviousUpEvent;
public void onCreate(Bundle savedInstanceState){
requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//外部网页
init();
//TextView hello = (TextView)findViewById(R.id.q);
//LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
//LinearLayout hello = (LinearLayout)findViewById(R.id.q);
//LinearLayout hello = (LinearLayout)findViewById(R.id.q);
//WebView hello = (WebView)findViewById(R.id.webView);
webView = (WebView) findViewById(R.id.webView);
webView.setOnTouchListener(listener);
}
OnTouchListener listener = new OnTouchListener(){
@Override
public boolean onTouch(View v,MotionEvent event) {
// TODO Auto-generated method stub
/*if(waitDouble == true){
waitDouble = false;
Thread thread = new Thread(){
@Override
public void run(){
try {
sleep(DOUBLE_CLICK_TIME);
if(waitDouble == false){
waitDouble = true;
singleClick();
}
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
thread.start();
}else{
waitDouble = true;
doubleClick();
}*/
if (event.getAction() == MotionEvent.ACTION_DOWN) {
if (mPreviousUpEvent != null
&& mCurrentDownEvent != null
&& isConsideredDoubleTap(mCurrentDownEvent,
mPreviousUpEvent, event)) {
Toast.makeText(MainActivity.this, "双击", Toast.LENGTH_LONG).show();
}
mCurrentDownEvent = MotionEvent.obtain(event);
} else if (event.getAction() == MotionEvent.ACTION_UP) {
mPreviousUpEvent = MotionEvent.obtain(event);
}
return false;
}
};
private boolean isConsideredDoubleTap(MotionEvent firstDown,
MotionEvent firstUp, MotionEvent secondDown) {
if (secondDown.getEventTime() - firstUp.getEventTime() > DOUBLE_TAP_TIMEOUT) {
return false;
}
int deltaX = (int) firstUp.getX() - (int) secondDown.getX();
int deltaY = (int) firstUp.getY() - (int) secondDown.getY();
return deltaX * deltaX + deltaY * deltaY < 10000;
}
private void singleClick(){
Toast.makeText(MainActivity.this, "单击", Toast.LENGTH_LONG)
.show();
}
private void doubleClick(){
Toast.makeText(MainActivity.this, "双击", Toast.LENGTH_LONG).show();
}
private WebView webView;
private void init(){
webView = (WebView) findViewById(R.id.webView);
webView.getSettings().setBuiltInZoomControls(true);
//WebView加载web资源
webView.loadUrl("http://baidu.com");
//覆盖WebView默认使用第三方或系统默认浏览器打开网页的行为，使网页用WebView打开
webView.setWebViewClient(new WebViewClient(){
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// TODO Auto-generated method stub
//返`
值是true的时候控制去WebView打开，为false调用系统浏览器或第三方浏览器
view.loadUrl(url);
return true;
}
});
}
}
//activity_main.xml页面
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:fadingEdgeLength="0sp"
android:id="@+id/q"
>
<LinearLayout
android:id="@+id/myTitleBarLayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<TextView
android:id="@+id/myTitleBarTextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/app_name"
android:paddingTop="4dip"
android:paddingBottom="4dip"
android:paddingLeft="6dip"
android:textStyle="bold"
android:shadowColor="#BB000000"
android:shadowRadius="3.0"
android:shadowDy=".25"
/>
<View
android:layout_width="fill_parent"
android:layout_height="1dip"
android:background="#CCEEEEEE"
android:padding="10dip"
/>
</LinearLayout>
<!-- <ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
>
Insert your regular layout stuff here
<Button android:id="@+id/toggle_title_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Toggle Title"
/>
</ScrollView> -->
<WebView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/webView"
/>
</LinearLayout>
网友评论