Android TextView 显示网络图片

package com.iaiai;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.net.URL;

import android.app.Activity;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.text.Html;
import android.text.Html.ImageGetter;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

import com.hilary.utils.AsyncImageLoader;

/**
 * 
 * <p>
 * Title: Main.java
 * </p>
 * <p>
 * E-Mail: [e-mail]
 * </p>
 * <p>
 * QQ: 176291935
 * </p>
 * <p>
 * Http: iaiai.iteye.com
 * </p>
 * <p>
 * Create time: 2011-10-26
 * </p>
 * 
 * @author 丸子
 * @version 0.0.1
 */
public class Main extends Activity {
	Button btn2;
	ImageView imge;
	Thread thread = null;
	Runnable runnable = null;
	TextView textView = null;
	 Drawable dra = null;
	private AsyncImageLoader asyncImageLoader;
	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		asyncImageLoader = AsyncImageLoader.getAsyncImageLoader();
		btn2 = (Button) findViewById(R.id.btn2);
		textView = (TextView) findViewById(R.id.show_tv);
		btn2.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				Handler handler = new Handler();
//				handler.post(runable);
				textView.setText(Html.fromHtml( _readFile("/sdcard/test2.txt"), imgGetter, null));
			}
		});
	}
	
	public String _readFile(String str) {
		StringBuffer sb = new StringBuffer();
		File file = new File(str);
		try {
			FileReader is = new FileReader(file);
			while (is.ready()) {
				int c = is.read();
				sb.append((char) c);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		return sb.toString();
	}
	
	ImageGetter imgGetter = new Html.ImageGetter() {

		@Override
		public Drawable getDrawable(String source) {
			System.out.println("***" + source);
			//异步加载图片
//			 Drawable drawable = asyncImageLoader.loadDrawable(
//					source, new ImageCallback() {
//
//						@Override
//						public void imageLoaded(Drawable imageDrawable,
//								String imageUrl) {
//							 if (imageDrawable == null) {
//							 } else {
//								 imageDrawable.setBounds(0, 0, imageDrawable.getIntrinsicWidth(), imageDrawable   
//						                    .getIntrinsicHeight()); 
//							 }
//							 dra = imageDrawable;
//						}
//					});
//			if(source.equals("1")){
//				drawable = Main.this.getResources().getDrawable(R.drawable.aa);
//			} else if (source.equals("2")){
//				drawable = Main.this.getResources().getDrawable(R.drawable.b);
//			} else {
//				drawable = Main.this.getResources().getDrawable(R.drawable.icon);
//			}
			URL url;  
			Drawable drawable = null;
            try {  
                url = new URL(source);  
                drawable = Drawable.createFromStream(url.openStream(), "");  
            } catch (Exception e) {  
                return null;  
            }  

			drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable   
                    .getIntrinsicHeight()); 
			return drawable;
		}   
		
	};

}

评论

1 楼 sd6733531 2011-11-10  

ImageGetter是个同步方法。用它来下载网络图片不合适,设置本地资源比较靠谱点。