一、安卓访问网络需要AndroidManifest.xml配置这样一个节点
<manifest>
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
二、获取图片两种方法
第一种:
public Bitmap loadImageFromUrl(String url) throws Exception {
final DefaultHttpClient client = new DefaultHttpClient();
final HttpGet getRequest = new HttpGet(url); HttpResponse response = client.execute(getRequest);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode != HttpStatus.SC_OK) {
Log.e("PicShow", "Request URL failed, error code =" + statusCode);
} HttpEntity entity = response.getEntity();
if (entity == null) {
Log.e("PicShow", "HttpEntity is null");
}
InputStream is = null;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
is = entity.getContent();
byte[] buf = new byte[1024];
int readBytes = -1;
while ((readBytes = is.read(buf)) != -1) {
baos.write(buf, 0, readBytes);
}
} finally {
if (baos != null) {
baos.close();
}
if (is != null) {
is.close();
}
}
byte[] imageArray = baos.toByteArray();
return BitmapFactory.decodeByteArray(imageArray, 0, imageArray.length);
}
第二种方法:
public byte[] getImage(String path) throws Exception {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5 * 1000);
conn.setRequestMethod("GET");
InputStream inStream = conn.getInputStream();
if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
return readStream(inStream);
}
return null;
}