webview简单使用
package com.travel_lover;
import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Window;
import android.view.WindowManager;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.support.v4.app.NavUtils;
public class WebActivity extends Activity {
WebView mywebview;
@SuppressLint("SetJavaScriptEnabled")
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_PROGRESS);
setContentView(R.layout.activity_web);
mywebview=(WebView)findViewById(R.id.webView1);
mywebview.getSettings().setJavaScriptEnabled(true);
//设置进度条
mywebview.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress) {
WebActivity.this.setProgress(progress * 100);
}
});
mywebview.loadUrl("http://tuan.baidu.com/");
//使用自己的Browser，不调用系统自带的
mywebview.setWebViewClient(new WebViewClient(){
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
});
}
public boolean onKeyDown(int keyCode,KeyEvent event){
if ((keyCode == KeyEvent.KEYCODE_BACK) && mywebview.canGoBack()){
mywebview.goBack();
return true;
}
if (keyCode == KeyEvent.KEYCODE_BACK) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("离开团购信息？")
.setCancelable(false)
.setPositiveButton("确定",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
WebActivity.this.finish();
android.os.Process
.killProcess(android.os.Process
.myPid());
android.os.Process.killProcess(android.os.Process.myTid());
android.os.Process.killProcess(android.os.Process.myUid());
}
})
.setNegativeButton("返回",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.show();
return true;
}
return false;
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
}
@Override
protected void onRestart() {
// TODO Auto-generated method stub
super.onRestart();
java.lang.System.out.println("onRestart");
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
java.lang.System.out.println("onResume");
}
@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
java.lang.System.out.println("onStart");
}
@Override
protected void onStop() {
// TODO Auto-generated method stub
java.lang.System.out.println("onStop");
super.onStop();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_web, menu);
return true;
}
}