获取网页图片

怎么获取网络图片呢？   0.0

android  4.4版本

P.s  清单文件中，要加入网络访问权限。

public class MainActivity extends ActionBarActivity {

private ImageView show;

private EditText edit;

private final int LOAD_SUCCESS=1;

private final int LOAD_ERROR=-1;

private  Handler handler=new Handler(){

public void handleMessage(Message msg){

switch(msg.what){

case LOAD_SUCCESS:

show.setImageBitmap((Bitmap) msg.obj);

break;

case LOAD_ERROR:

Toast.makeText(getApplicationContext(), R.string.error, 1).show();

break;

}

}

};

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button bn=(Button) findViewById(R.id.bn);

edit=(EditText)findViewById(R.id.imagePath);

show=(ImageView)findViewById(R.id.image);

}

public void show(View view){

new Thread(new Runnable(){

public void run(){

try {

byte []data=getPic();

Bitmap bitMap=BitmapFactory.decodeByteArray(data, 0, data.length);

Message msg=new Message();

msg.what=LOAD_SUCCESS;

msg.obj=bitMap;

handler.sendMessage(msg);

} catch (Exception e) {

handler.sendEmptyMessage(LOAD_ERROR);

e.printStackTrace();

}

}

}).start();

}

protected byte[] getPic() throws Exception{

String path=edit.getText().toString();

URL url=new URL(path);

HttpURLConnection conn=(HttpURLConnection) url.openConnection(); // 基于HTTP协议的连接对象

conn.setReadTimeout(5000);

conn.setRequestMethod("GET");

if(conn.getResponseCode()==200){ // 状态码判断是否请求成功

InputStream is=conn.getInputStream(); //输入流对象接受来自网络的数据，但一定是正确的数据。

ByteArrayOutputStream outStream=new ByteArrayOutputStream();

byte []buffer=new byte[1024];

int len=0;

while((len=is.read(buffer))!=-1){

outStream.write(buffer);

}

is.close();

outStream.close();

return outStream.toByteArray();

}

return null;

}

}

基本上和获取源码差不多，注意图片的格式，用相应的函数转换下就好！