xml代碼如下:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ImageView
android:id="@+id/myimg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
.java程序如下:
package org.lxh.demo;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnFocusChangeListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
public class Hello extends Activity {
private static final String PATH="http://img1.gtimg.com/11/1176/117678/11767886_1200x1000_0.jpg";
private ImageView img=null;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); // 生命週期方法
super.setContentView(R.layout.main); // 設置要使用的佈局管理器
this.img=(ImageView)super.findViewById(R.id.myimg);
try{
byte data[]=this.getUrlData();
Bitmap bm=BitmapFactory.decodeByteArray(data, 0, data.length);
this.img.setImageBitmap(bm);
}catch(Exception e){
}
}
private byte[] getUrlData() throws Exception {
ByteArrayOutputStream bos=null;
URL url=new URL(PATH);
bos=new ByteArrayOutputStream();
byte[] data=new byte[1024];
HttpURLConnection conn=(HttpURLConnection)url.openConnection();
InputStream input=conn.getInputStream();
int len=0;
while((len=input.read(data))!=-1){
bos.write(data,0,len);
}
return bos.toByteArray();
}
}
需要配置權限:
<?xml version="1.0" encoding="utf-8"?>
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
package="org.lxh.demo"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="10" />
<strong><span style="color:#ff0000;"><uses-permission android:name="android.permission.INTERNET"/></span></strong>
<application
android:icon="@drawable/icon"
android:label="@string/app_name">
<activity
android:name=".Hello"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>