根据url给imageview设置图片显示

//这是图片地址

String imageUrl = "http://139.224.43.42/medical/Uploads/head/07c3b4de0173f0128d6c2ec78c8e3828.jpg";

1、修改你的main.xml文件如下：

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

android:id="@+id/imview"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center"/>

/>

Step2

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

ImageView imView = (ImageView) findViewById(R.id.imview);

imView.setImageBitmap(returnBitMap(imageUrl));

}

public Bitmap returnBitMap(String url) {

URL myFileUrl = null;

Bitmap bitmap = null;

try {

myFileUrl = new URL(url);

} catch (MalformedURLException e) {

e.printStackTrace();

}

try {

HttpURLConnection conn = (HttpURLConnection) myFileUrl.openConnection();

conn.setDoInput(true);

conn.connect();

InputStream is = conn.getInputStream();

bitmap = BitmapFactory.decodeStream(is);

is.close();

} catch (IOException e) {

e.printStackTrace();

}

return bitmap;

}

3、其中，returnBitMap(String url) 方法就是具体实现网络图片转换成bitmap。

4 ,如果你直接这样设置在有的手机上会报一个错误；

Caused by: android.os.NetworkOnMainThreadException；

解决方案详细请参考：http://www.jianshu.com/writer#/notebooks/5804231/notes/7123422