android开发简易浏览器

来源：互联网发布：java游戏叫灵剑伏魔录编辑：程序博客网时间：2024/04/29 18:02

看视频教程，学着做了个简单的（PS：代码可能有点乱~）

效果图

startActivity

package com.example.webview;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class StartActivity extends Activity implements OnClickListener{
   private Button bts;
   private EditText ets;
   String webUrl;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       // TODO Auto-generated method stub
       super.onCreate(savedInstanceState);
       setContentView(R.layout.startweb);
       init();
//       webUrl = "http:///"+ets.getText().toString();
       bts.setOnClickListener(this);
   }

   private void init() {
       // TODO Auto-generated method stub
       bts = (Button) findViewById(R.id.button1);
       ets = (EditText) findViewById(R.id.editText1);
   }

   @Override
   public void onClick(View arg0) {
       // TODO Auto-generated method stub
       Intent intent = new Intent(StartActivity.this,MainActivity.class);
       intent.putExtra("url", ets.getText().toString());
       startActivity(intent);
   }
}

mainactivity

package com.example.webview;

import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.os.Build;

public class MainActivity extends ActionBarActivity {
   private String webUrl ;
   private WebView webView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_PROGRESS);
       requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setContentView(R.layout.web);

        Intent intent = this.getIntent();
        webUrl = intent.getStringExtra("url");
//        Uri uri = Uri.parse(url);
//        Intent intent = new Intent(Intent.ACTION_VIEW,uri);
//        startActivity(intent);




        init();

    }

   private void init() {
       webView = (WebView) findViewById(R.id.webView1);
       //local load
//       webView.loadUrl("file:///android_asset/qwe.html");
       //web load
       webView.loadUrl(webUrl);
       //覆盖webview默认通过第三方或者是系统浏览器打开网页的行为，使得网页在webview中打开
       webView.setWebViewClient(new WebViewClient(){
           @Override
           public boolean shouldOverrideUrlLoading(WebView view, String url) {
               //返回值是true的时候控制网页在webview中打开，返回值是false时调用系统或第三方浏览器打开
//               view.loadUrl(url);
               return false;
           }
           //webviewclient帮助webview去处理一些页面控制和请求通知
       });
       //设置启用javascript
       WebSettings webSettings = webView.getSettings();
       webSettings.setJavaScriptEnabled(true);
       webSettings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);

       webView.setWebChromeClient(new WebChromeClient(){
           @Override
           public void onProgressChanged(WebView view, int newProgress) {
               // TODO Auto-generated method stub
               if (newProgress==100) {
                   setTitle("");
                   setProgressBarIndeterminateVisibility(false);
                   setProgressBarVisibility(false);
               }else {
                   setProgressBarIndeterminateVisibility(true);
                   setProgressBarVisibility(true);
                   setProgress(newProgress*100);

                   setTitle("The page is loading"+newProgress+"%");
               }
           }
       });
   }

   @Override
   public boolean onKeyDown(int keyCode, KeyEvent event) {
       // TODO Auto-generated method stub

       if (keyCode==KeyEvent.KEYCODE_BACK&&webView.canGoBack()) {
           webView.goBack();
           return true;
       }
       return super.onKeyDown(keyCode, event);
   }

}

1 0