[android]android访问网络请求的问题，Mark一下

方法一、在网络访问中增加代码(红色部分)

调用前
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
@SuppressLint("NewApi")

http前

StrictMode.ThreadPolicy policy=new StrictMode.ThreadPolicy.Builder().permitAll().build();

StrictMode.setThreadPolicy(policy);

    @TargetApi(Build.VERSION_CODES.GINGERBREAD)
    @SuppressLint("NewApi")
    public void SendGetRequest(){
        try {
            StrictMode.ThreadPolicy policy=new StrictMode.ThreadPolicy.Builder().permitAll().build();
           StrictMode.setThreadPolicy(policy);
            HttpURLConnection connection = null;
            URL url = new URL(GetUrl);
            connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("GET");
            InputStream is = connection.getInputStream();

            BufferedReader br = new BufferedReader(new InputStreamReader(is));
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = br.readLine())!=null){
                sb.append(line);
            }
            result=sb.toString();
            //handler.sendEmptyMessage(0x001);  向线程发送消息 方法2

        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

方法二、新开线程:

//线程
private Handler handler = new Handler() {
    public void handleMessage(Message msg) {
        switch (msg.what) {
            case 0x001:
                TextViewTxt.setText("结果显示：\n" + result);
                break;
            case 0x002:
                TextViewTxt.setText("结果显示：\n" + result);
                break;
        }

    }
};

//绑定
Button1.setOnClickListener(this);
activity 》》 implements View.OnClickListener

//New 线程并调用
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.button:
            new Thread() {
                @Override
                public void run() {
                    //TextViewTxt.setText("点了");
                    SendGetRequest();
                }
            }.start();
            break;
    }
}