Android用ImageView显示本地和网上的图片 =

Android用ImageView显示本地和网上的图片

ImageView是Android程序中经常用到的组件，它将一个图片显示到屏幕上。

在UI xml定义一个ImageView如下：

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.myimage);

ImageView image1 = (ImageView) findViewById(R.myImage.image);

//Bitmap bitmap = getLoacalBitmap(\"/aa/aa.jpg\"); //从本地取图片

Bitmap bitmap =

getHttpBitmap(\"http://blog.3gstdy.com/wp-content/themes/twentyten/images/headers/path.jpg\");

//从网上取图片

image1 .setImageBitmap(bitmap); //设置Bitmap

}

/**

* 加载本地图片

* http://bbs.3gstdy.com

* @param url

* @return

*/

public static Bitmap getLoacalBitmap(String url) {

try {

FileInputStream fis = new FileInputStream(url);

return BitmapFactory.decodeStream(fis);

} catch (FileNotFoundException e) {

e.printStackTrace();

return null;

}

}

/**

* 从服务器取图片

*http://bbs.3gstdy.com

* @param url

* @return

*/

public static Bitmap getHttpBitmap(String url) {

URL myFileUrl = null;

Bitmap bitmap = null;

try {

Log.d(TAG, url);

myFileUrl = new URL(url);

} catch (MalformedURLException e) {

e.printStackTrace();

}

try {

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

conn.setConnectTimeout(0);

conn.setDoInput(true);

conn.connect();

InputStream is = conn.getInputStream();

bitmap = BitmapFactory.decodeStream(is);

is.close();

} catch (IOException e) {

e.printStackTrace();

}

return bitmap;

}