安卓中的手势 - 黑马程序员技术交流社区

package com.example.webviewstudy;
import android.app.Activity;
import android.os.Bundle;
import android.renderscript.Element;
import android.util.Log;
import android.view.GestureDetector;
import android.view.GestureDetector.OnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.LinearLayout;
import android.widget.Toast;
public class Flay_Activity extends Activity implements OnTouchListener, OnGestureListener{
LinearLayout layout;
@SuppressWarnings("deprecation")
GestureDetector fly = new GestureDetector(this);
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.fliy_test);
layout = (LinearLayout) findViewById(R.id.lineLayout);
layout.setOnTouchListener(this);
layout.setFocusable(true);
layout.setClickable(true);
layout.setLongClickable(true);
//layout.setLongClickable(true);
fly.setIsLongpressEnabled(true);
}
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
//接触事件
/* int i = event.getPointerCount();
Log.i("TAG", i + "--->触点个数");
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
Log.i("TAG", "--->触点按下");
break;
case MotionEvent.ACTION_MOVE:
Log.i("TAG", event.getX() + "::" + event.getY() + "--->触点移动");
break;
case MotionEvent.ACTION_UP:
Log.i("TAG", "---->触点释放");
break;
default:
break;
}*/
return fly.onTouchEvent(event);
}
@Override
public boolean onDown(MotionEvent e) {
// TODO Auto-generated method stub
Log.i("TAG", "---->长按"); //轻按出发
return false;
}
@Override
public void onShowPress(MotionEvent e) {
// TODO Auto-generated method stub
Log.i("TAG", "---->长按11111111111111"); //重按触发
}
@Override
public boolean onSingleTapUp(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
float distanceY) {
// TODO Auto-generated method stub
return false;
}
@Override
public void onLongPress(MotionEvent e) {
// TODO Auto-generated method stub
Log.i("TAG", "--->长按```````````哼哼按");
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
// TODO Auto-generated method stub
if(e1.getX() - e2.getX() > 10) {
Toast.makeText(this, "向左滑动", 1).show();
return true;
}
return false;
}
}

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package com.example.webviewstudy;
import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class MainActivity extends Activity {
private WebView webview;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// WebView(网络视图)能加载显示网页，可以将其视为一个浏览器。它使用了WebKit渲染引擎加载显示网页，实现
webview = (WebView) findViewById(R.id.webview);
//能够执行JAviscript脚本
webview.getSettings().setJavaScriptEnabled(true);
//加载显示的页面
webview.loadUrl("http://www.baidu.com/");
//设置web视图为了让WebView能够响应超链接功能，调用setWebViewClient( )方法，设置 WebView视图
webview.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// TODO Auto-generated method stub
view.loadUrl(url);
return super.shouldOverrideUrlLoading(view, url);
}
});
}
//返回键最右边的
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack()) {
webview.goBack(); //goBack()表示返回WebView的上一页面
return true;
}
return false;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}

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