解决android.os.NetworkOnMainThreadException

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if (android.os.Build.VERSION.SDK_INT > 9) {

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

    StrictMode.setThreadPolicy(policy);

}

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public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    this.setContentView(R.layout.main_view);

    new Thread(runnable).start();

}

Handler handler = new Handler(){

    @Override

    public void handleMessage(Message msg) {

        super.handleMessage(msg);

        Bundle data = msg.getData();

        String val = data.getString("value");

        Log.i(TAG,"请求结果:" + val);

    }

}

Runnable runnable = new Runnable(){

    @Override

    public void run() {

        // TODO: http request.

        Message msg = new Message();

        Bundle data = new Bundle();

        data.putString("value","请求结果");

        msg.setData(data);

        handler.sendMessage(msg);

    }

}

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// Android 4.0 之后不能在主线程中请求HTTP请求

            new Thread(new Runnable(){

                @Override

                public void run() {

                    cachedImage = asyncImageLoader.loadDrawable(imageUrl, position);

                    imageView.setImageDrawable(cachedImage);

                }

            }).start();