Android(安卓)分别使用Post与Get实现网络图片加载

1.post方法

public class NetActivity extends BaseActivity {    private static final int SUCCESS = 0;    protected static final int ERROR = 1;    private EditText mEditText;    private TextView mTextView;    private Handler mHandler = new Handler() {        public void handleMessage(android.os.Message msg) {            switch (msg.what) {            case SUCCESS:                mTextView.setText((String) msg.obj);                show("加载成功");                break;            case ERROR:                show("加载失败");                break;            default:                break;            }        };    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_net);        mEditText = (EditText) findViewById(R.id.editText1);        mTextView = (TextView) findViewById(R.id.textView1);    }    public void go(View view) {        new Thread(new Runnable() {            @Override            public void run() {                try {                    String url = mEditText.getText().toString().toString();                    HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();                    conn.setReadTimeout(5000);                    conn.setRequestMethod("POST");                    conn.setConnectTimeout(5000);                    conn.setDoOutput(true);                    conn.setDoInput(true);                    ByteArrayOutputStream bos = null;                    conn.setRequestProperty("User-Agent", "image/gif,image/jpeg");                    conn.setRequestProperty("Accept-Language", "zh-cn");                    conn.setRequestProperty("Accept", "image/gif,image/jpeg");                    if (conn.getResponseCode() == 200) {                        InputStream inputStream = conn.getInputStream();                        bos = new ByteArrayOutputStream();                        byte[] buffer = new byte[1024];                        int len = -1;                        while ((len = inputStream.read(buffer)) != -1) {                            bos.write(buffer, 0, len);                            bos.flush();                        }                        inputStream.close();                        bos.close();                    }                    String result = new String(bos.toByteArray());                    if (result.contains("utf-8")) {                        result = new String(bos.toByteArray(), "utf-8");                    } else if (result.contains("gb2312")) {                        result = new String(bos.toByteArray(), "gb2312");                    }                    Message msg = Message.obtain();                    msg.obj = result;                    msg.what = SUCCESS;                    mHandler.sendMessage(msg);                } catch (Exception e) {                    e.printStackTrace();                    mHandler.sendEmptyMessage(ERROR);                }            }        });    }}

2.Get方式

public class GetNetImageActivity extends BaseActivity {    private EditText mUrl;    private ImageView mImageView;    private Handler mHandler = new Handler(){        public void handleMessage(android.os.Message msg) {            Bitmap bitmap = (Bitmap) msg.obj;            mImageView.setImageBitmap(bitmap);        };    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_get_netimage);        mUrl = (EditText) findViewById(R.id.editText1);        mImageView = (ImageView) findViewById(R.id.imageView1);    }    public void getNetImage(View view){        new Thread(new Runnable() {            @Override            public void run() {                try {                    URL url = new URL(mUrl.getText().toString().trim());                    HttpURLConnection conn = (HttpURLConnection) url.openConnection();                    conn.setRequestMethod("GET");                    conn.setConnectTimeout(5000);                    conn.setReadTimeout(5000);                    if (conn.getResponseCode() == 200) {                        InputStream inputStream = conn.getInputStream();                        Bitmap bitmap = BitmapFactory.decodeStream(inputStream);                        Message message = new Message();                        message.obj = inputStream;                        mHandler.sendMessage(message);                    }                } catch (MalformedURLException e) {                    e.printStackTrace();                } catch (ProtocolException e) {                    e.printStackTrace();                } catch (IOException e) {                    e.printStackTrace();                }            }        }).start();    }}

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