写了简单 Android环境下基于webview的浏览器,实现划屏切换页面的手势,在一个activity里webview的缓冲内切换的。并测试下调用系统拍照的功能
MVC模式(Model-View-Controller)
1.WebView的设置部分
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private void showViews() {
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mGestureDetector = new GestureDetector( this );
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wv_vm.getSettings().setSupportZoom( true );
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wv_vm.getSettings().setBuiltInZoomControls( true );
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wv_vm.getSettings().set<SPAN class =wp_keywordlink_affiliate><A title=JavaScript href= "http://www.mikel.cn/category/%e5%bc%80%e5%8f%91%e7%ac%94%e8%ae%b0/javascript" target=_blank>JavaScript</A></SPAN>Enabled( true );//启用<SPAN class =wp_keywordlink_affiliate><A title=JavaScript href= "http://www.mikel.cn/category/%e5%bc%80%e5%8f%91%e7%ac%94%e8%ae%b0/javascript" target=_blank>JavaScript</A></SPAN>支持
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wv_vm.loadUrl( "http://www.cnblogs.com/pxue/" );//加载网址
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wv_vm.setOnTouchListener( this );
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wv_vm.setClickable( true );
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wv_vm.setLongClickable( true );
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mGestureDetector.setIsLongpressEnabled( true );
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wv_vm.setWebViewClient( new HelloWebViewClient());
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wv_vm.setFocusable( true );
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在WebView加载新开的页面,是重写了Android.webkit.WebViewClient
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private class HelloWebViewClient extends WebViewClient {
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public boolean shouldOverrideUrlLoading(WebView view, String url) {
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2.划屏手势部分
监听触摸时间传给手势对象
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public boolean onTouch(View v, MotionEvent event) {
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return mGestureDetector.onTouchEvent(event);
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重写了划动事件
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public boolean onFling(MotionEvent e1, MotionEvent e2, float <SPAN class =wp_keywordlink_affiliate><A title=Velocity href= "http://www.mikel.cn/tag/velocity/" target=_blank>Velocity</A></SPAN>X,
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float <SPAN class =wp_keywordlink_affiliate><A title=Velocity href= "http://www.mikel.cn/tag/velocity/" target=_blank>Velocity</A></SPAN>Y) {
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if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE
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&& Math.abs(<SPAN class =wp_keywordlink_affiliate><A title=Velocity href= "http://www.mikel.cn/tag/velocity/" target=_blank>Velocity</A></SPAN>X) > SWIPE_THRESHOLD_VELOCITY) {
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} else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE
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&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) { |
变量、常量的声明
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private GestureDetector mGestureDetector;
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private static final int SWIPE_MIN_DISTANCE = 120 ;
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private static final int SWIPE_THRESHOLD_VELOCITY = 200 ;
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3.调用系统拍照功能部分
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private void setListensers() {
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Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
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startActivityForResult(intent, 1 );
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private void findViews() {
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img_pic=(ImageView)findViewById(R.id.img_pic); |
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protected void onActivityResult( int requestCode, int resultCode, Intent data)
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if (resultCode == Activity.RESULT_OK)
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Bitmap cameraBitmap = (Bitmap) data.getExtras().get( "data" );
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img_pic.setImageBitmap(cameraBitmap); |
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super .onActivityResult(requestCode, resultCode, data);
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小demo的源码本来上传到csdn了,可在我上传的资源就是找不到,可能在审核,等我之后不上下载链接吧
想要demo源码也可以邮件给我
邮箱: 625557711@qq.com
下载链接: http://download.csdn.net/source/3248263