Java tutorial
/* Android Asynchronous Http Client Sample Copyright (c) 2014 Marek Sebera <marek.sebera@gmail.com> http://loopj.com Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package com.loopj.android.http.sample; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.CheckBox; import com.loopj.android.http.AsyncHttpClient; import com.loopj.android.http.FileAsyncHttpResponseHandler; import com.loopj.android.http.RequestHandle; import com.loopj.android.http.ResponseHandlerInterface; import com.loopj.android.http.sample.util.FileUtil; import org.apache.http.Header; import org.apache.http.HttpEntity; import java.io.File; public class DirectorySample extends SampleParentActivity { private static final String LOG_TAG = "DirectorySample"; private FileAsyncHttpResponseHandler lastResponseHandler = null; private CheckBox cbAppend, cbRename; @Override public int getSampleTitle() { return R.string.title_directory_sample; } @Override public boolean isRequestBodyAllowed() { return false; } @Override public boolean isRequestHeadersAllowed() { return true; } @Override public String getDefaultURL() { return "https://httpbin.org/robots.txt"; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Button deleteTargetFile = new Button(this); deleteTargetFile.setText(R.string.button_delete_target_file); deleteTargetFile.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { clearOutputs(); if (lastResponseHandler != null) { File toBeDeleted = lastResponseHandler.getTargetFile(); debugResponse(LOG_TAG, String.format("File was deleted? %b", toBeDeleted.delete())); debugResponse(LOG_TAG, String.format("Delete file path: %s", toBeDeleted.getAbsolutePath())); } else { debugThrowable(LOG_TAG, new Error("You have to Run example first")); } } }); cbAppend = new CheckBox(this); cbAppend.setText("Constructor \"append\" is true?"); cbAppend.setChecked(false); cbRename = new CheckBox(this); cbRename.setText("Constructor \"renameTargetFileIfExists\" is true?"); cbRename.setChecked(true); customFieldsLayout.addView(deleteTargetFile); customFieldsLayout.addView(cbAppend); customFieldsLayout.addView(cbRename); } @Override public ResponseHandlerInterface getResponseHandler() { lastResponseHandler = new FileAsyncHttpResponseHandler(getCacheDir(), cbAppend.isChecked(), cbRename.isChecked()) { @Override public void onStart() { clearOutputs(); } @Override public void onSuccess(int statusCode, Header[] headers, File response) { debugHeaders(LOG_TAG, headers); debugStatusCode(LOG_TAG, statusCode); debugFile(response); } @Override public void onFailure(int statusCode, Header[] headers, Throwable throwable, File file) { debugHeaders(LOG_TAG, headers); debugStatusCode(LOG_TAG, statusCode); debugThrowable(LOG_TAG, throwable); debugFile(file); } private void debugFile(File file) { if (file == null || !file.exists()) { debugResponse(LOG_TAG, "Response is null"); return; } try { debugResponse(LOG_TAG, file.getAbsolutePath() + "\r\n\r\n" + FileUtil.getStringFromFile(file)); } catch (Throwable t) { Log.e(LOG_TAG, "Cannot debug file contents", t); } } }; return lastResponseHandler; } @Override public RequestHandle executeSample(AsyncHttpClient client, String URL, Header[] headers, HttpEntity entity, ResponseHandlerInterface responseHandler) { return client.get(this, URL, headers, null, responseHandler); } }