71 Androdi WebView 的简单使用（一）

最新推荐文章于 2023-06-23 16:29:51 发布

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最新推荐文章于 2023-06-23 16:29:51 发布

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本文介绍了如何使用 Android 的 WebView 控件加载网页 URL 和 HTML 字符串。包括设置必要的权限、配置 WebView 属性及加载不同类型的网页内容。

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package com.example.android_webview_loadpage;

import java.net.URL;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.webkit.WebSettings;
import android.webkit.WebView;

/**
 * Android API: http://developer.android.com/reference/android/webkit/WebView.html
 * @WebView 要添加权限 
 *       <uses-permission android:name="android.permission.INTERNET" />
 * @author Administrator
 *
 */
public class MainActivity extends Activity {

	private WebView webView;
	private final String URL_PATH="http://baidu.com";
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
//		setContentView(R.layout.activity_main);
		webView=(WebView)findViewById(R.id.webView1);
		Uri uri=Uri.parse(URL_PATH);
		Intent intent=new Intent(Intent.ACTION_VIEW,uri);
		startActivity(intent);
		//To provide a WebView in your own Activity, include a  in your layout, 
		//or set the entire Activity window as a WebView during onCreate():
		WebView webView=new WebView(this);
		setContentView(webView);
		
		
//		WebSettings webSettings=webView.getSettings();
//		webSettings.setBuiltInZoomControls(true);//设置放大或缩小的按钮
//		//加载 Url
//		webView.loadUrl(URL_PATH);
	}

//	@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;
//	}

}

WebView 加载：

package com.example.android_webview_loadpage;

import java.net.URL;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.webkit.WebSettings;
import android.webkit.WebView;

/**
 * Android API: http://developer.android.com/reference/android/webkit/WebView.html
 * @WebView 要添加权限 
 *       <uses-permission android:name="android.permission.INTERNET" />
 * @author Administrator
 *
 */
public class MainActivity extends Activity {

	private WebView webView;
	private final String URL_PATH="http://baidu.com";
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		webView=(WebView)findViewById(R.id.webView1);
//		Uri uri=Uri.parse(URL_PATH);
//		Intent intent=new Intent(Intent.ACTION_VIEW,uri);
//		startActivity(intent);
//		//To provide a WebView in your own Activity, include a  in your layout, 
//		//or set the entire Activity window as a WebView during onCreate():
//		WebView webView=new WebView(this);
//		setContentView(webView);
//		
		
		WebSettings webSettings=webView.getSettings();
		webSettings.setBuiltInZoomControls(true);//设置放大或缩小的按钮
		//加载 Url
		webView.loadUrl(URL_PATH);
	}

	@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;
	}

}

WebView 加载 HTML string

package com.example.android_webview_loaddata;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.webkit.WebView;

public class MainActivity extends Activity {

	private WebView webView;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		webView = (WebView) this.findViewById(R.id.webView1);
		String summary = "<html><body>You scored <b>192</b> points.</body></html>";
		webView.loadData(summary, "text/html", null);

	}

	@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;
	}

}