android开发——获取网络图片

//通过地址获取bitma
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public Bitmap getBitmap(String path) {
Bitmap bitmap = null;
try {
//封装url
URL url = new URL(path);
//获得httpurl连接对象
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
//设置连接超时
connection.setConnectTimeout(5*1000);
//设置请求方法
connection.setRequestMethod("GET");
//判断请求状态码是否连接成功
if (connection.getResponseCode() == 200) {
InputStream is = connection.getInputStream();
//bitmapfactory可以有多种生存bitmap的方法
bitmap = BitmapFactory.decodeStream(is);
}
} catch (Exception e) {
e.printStackTrace();
}
return bitmap;
}
//获得字节数组
public void getBytesByIs(InputStream is) throws IOException {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
int len ;
byte[] data = new byte[1024];
while((len = is.read(data))!=-1){
bos.write(data, 0, len);
}
byte[] bytes = bos.toByteArray();
}