Android AsyncTask的用法

AsyncTask<Params,Progress,Result>

·Params为传入参数类型

·Progress为处理参数类型

·Result为返回类型

例如：一个连接类

private void connect() {

new AsyncTask() {

@Override

        protected String doInBackground(Void... params) {

if (mGlobals.mCameraDevice ==null) {

List detectedList = CameraDeviceDetector.detect(DeviceInterface.WLAN);

if (detectedList.isEmpty() ==true) {

return getString(R.string.not_find);

}

mGlobals.mCameraDevice = addEventListenerIfNeed(detectedList.get(0));

}else if (mGlobals.mCameraDevice.isConnected(DeviceInterface.WLAN) ==false) {

List detectedList = CameraDeviceDetector.detect(DeviceInterface.WLAN);

if (detectedList.isEmpty() ==false) {

mGlobals.mCameraDevice = addEventListenerIfNeed(detectedList.get(0));

}

}

Response response =mGlobals.mCameraDevice.connect(DeviceInterface.WLAN);

if (response.getResult() == Result.OK) {

mGlobals.addedEventTextBuffer("connected!");

mListener.showEvent(mGlobals.mEventTextBuilder.toString(),mEventTextView);

retrieveViewInfo();

return getString(R.string.succeed, getString(R.string.connect));

}else {

return getString(R.string.failed, getString(R.string.connect));

}

}

@Override

        protected void onPostExecute(String result) {

mStateView.setText(result);

showViewInfo();

}

}.execute();

}