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   源码介绍

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可缩放后退，加载图片，播放视频 

 

package com.mycompany.myapp2;

import android.app.*;
import android.os.*;
import android.widget.*;
import android.content.*;
import android.view.*;
import org.xml.sax.*;
import android.net.*;
import android.webkit.*;
import android.widget.FrameLayout;



public class MainActivity extends Activity 
{
	
	private Intent i=new Intent();
	private WebView wv;
	private String url="https://m.toutiao.com/?W2atIF=1";
	private ProgressDialog dialog;
	
	
	
	
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
//			requestWindowFeature(Window.FEATURE_NO_TITLE);//隐藏标题栏
	//	getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);//隐藏状态栏
//        
//		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {     
//		Window window = getWindow();                
//		window.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS,         
//		WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);}
		requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
		
	setContentView(R.layout.main);
	
		getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE,R.layout.title);
		wv=(WebView) findViewById(R.id.wv);
		init();
		
	}

	private void init()
	{
		// TODO: Implement this method
		
		wv.loadUrl(url);
		wv.setWebViewClient(new WebViewClient(){
			@Override
			public boolean shouldOverrideUrlLoading(WebView view,String url){
				
				view.loadUrl(url);
				return true;
			}
			
			
		});
		WebSettings settings = wv.getSettings();
		settings.setJavaScriptEnabled(true);
		settings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
		settings.setSupportZoom(true);
        settings.setBuiltInZoomControls(true);
		settings.setDisplayZoomControls(true);
		
		settings.setLoadsImagesAutomatically(true);
		settings.setPluginState(WebSettings.PluginState.ON);
		
		
	//	ws.setUseWideViewPort(true);// 可任意比例缩放
        settings.setLoadWithOverviewMode(true);// setUseWideViewPort方法设置webview推荐使用的窗口。setLoadWithOverviewMode方法是设置webview加载的页面的模式。

        settings.setSavePassword(true);
        settings.setSaveFormData(true);// 保存表单数据
     //   ws.setJavaScriptEnabled(true);
		
		
		settings.setDomStorageEnabled(true);
        settings.setSupportMultipleWindows(true);// 新加
		
		
		wv.setWebChromeClient(new WebChromeClient());
        wv.setWebViewClient(new WebViewClient());
		
		
		
		wv.setWebChromeClient(new WebChromeClient(){
			@Override
			public void onProgressChanged(WebView view,int newProgress){
				
				if(newProgress==100){
					closeDialog();
				}
				else{
					openDialog(newProgress);
				}
			}

			private void closeDialog()
			{
				// TODO: Implement this method
				if(dialog!=null&&dialog.isShowing()){
					dialog.dismiss();
					dialog=null;
				}
				
			}

			private void openDialog(int newProgress)
			{
				// TODO: Implement this method
				if(dialog==null){
					dialog=new ProgressDialog(MainActivity.this);
					dialog.setTitle("加载中");
					dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
					dialog.setProgress(newProgress);
					dialog.show();
				}
				else{
					dialog.setProgress(newProgress);
				}
				
			}
			
			
			
		});
	}

	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event)
	{
		// TODO: Implement this method
		if(keyCode==KeyEvent.KEYCODE_BACK){
			
			if(wv.canGoBack()){
				
				wv.goBack();
				return true;
			}
			else{
				System.exit(0);
			}
		}
		return super.onKeyDown(keyCode, event);
	}
	
	
	

		
	public void btn1(View view) 
    {
    	url="https://www.80s.tw";
		init();
		Intent intent=new Intent(MainActivity.this,SecActivity.class);
		startActivity(intent);
		
	}
	
	public void btn2(View view) 
    {
    	url="http://www.ygdy8.com";
	    init();


	}
	public void btn3(View view) 
    {
    	url= "http://www.btanf.com";
		init();
	 
	}
		
	public void btn4(View view) 
    {
    	Uri uri = Uri.parse("http://m.baidu.com/from=844b/ssid=0/uid=0/bd_page_type=1/pu=usm%405%2Csz%40320_1003%2Cta%40iphone_2_8.0_1_12.0/baiduid=CBB7BC42E464279E4251D1E1061E0B87/w=0_10_/t=iphone/l=1/tc?ref=www_iphone&lid=15074735750785968448&order=1&fm=alas_23&tj=app_rich_1_0_10_b1&wd=&eqid=d134384bc47aa800100000065b1f40aa&w_qd=IlPT2AEptyoA_ykx5uMos4O&tcplug=1&src=http%3A%2F%2Fmobile.baidu.com%2Fapp%3Faction%3Ddownload%26downtype%3Dnormal%26url%3Dhttp%3A%2F%2Fgdown.baidu.com%2Fdata%2Fwisegame%2F92084c9f79e24085%2Fxunlei_11100.apk%26ala%3Dwise_app%40onlyanswer%40%E8%BF%85%E9%9B%B7%26pid%3D2271559416%26docid%3D24126332%26tj%3Dsoft_24126332_2271559416_%E8%BF%85%E9%9B%B7");  
	    i = new Intent(Intent.ACTION_VIEW, uri);  
	    startActivity(i);
	
		}
		
	public void btn5(View view) 
    {
        url="https://m.douban.com/doulist/968362/?start=0";
	    init();

	}
		}