Java tutorial
/* * BruceHurrican * Copyright (c) 2016. * 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. * * This document is Bruce's individual learning the android demo, wherein the use of the code from the Internet, only to use as a learning exchanges. * And where any person can download and use, but not for commercial purposes. * Author does not assume the resulting corresponding disputes. * If you have good suggestions for the code, you can contact BurrceHurrican@foxmail.com * Bruce'sandroiddemo, ????? * ?, ? * ?? * ???BurrceHurrican@foxmail.com */ package com.bruce.study.demo.base; import android.app.Activity; import android.app.ProgressDialog; import android.content.Context; import android.os.*; import android.support.v4.app.Fragment; import android.widget.Toast; import com.bruce.study.demo.R; import com.bruce.study.demo.log.Logs; import java.lang.ref.WeakReference; /** * Fragment * Created by BruceHurrican on 2015/9/13. */ public abstract class BaseFragment extends Fragment { private final String TAG = getTAG(); private Context context; private String logsTag; /** * ? */ private ProgressDialog pd_waiting; private UIHandler mUIHandler; private WorkerHandler mWorkerHandler; private HandlerThread mHandlerThread; public abstract String getTAG(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); context = getActivity(); // TAG = getTAG(); logsTag = TAG + "-->"; } public final void logV(String text) { Logs.v(logsTag, text); } public final void logD(String text) { Logs.d(logsTag, text); } public final void logI(String text) { Logs.i(logsTag, text); } public final void logW(String text) { Logs.w(logsTag, text); } public final void logE(String text) { Logs.e(logsTag, text); } public void showToastShort(final String text) { ((Activity) context).runOnUiThread(new Runnable() { @Override public void run() { if (null != context) { Toast.makeText(context, text, Toast.LENGTH_SHORT).show(); } else { Logs.e(TAG, "?"); } } }); } public void showToastLong(final String text) { ((Activity) context).runOnUiThread(new Runnable() { @Override public void run() { if (null != context) { Toast.makeText(context, text, Toast.LENGTH_LONG).show(); } else { Logs.e(TAG, "print log error"); } } }); } /** * @param msg ??? * @return */ public ProgressDialog initProgressDialog(String msg) { pd_waiting = new ProgressDialog(getActivity()); pd_waiting.setProgressStyle(ProgressDialog.STYLE_SPINNER); pd_waiting.setTitle("??"); pd_waiting.setMessage(msg); pd_waiting.setIcon(R.drawable.icon_workdemo); pd_waiting.setIndeterminate(false); pd_waiting.setCancelable(false); pd_waiting.setCanceledOnTouchOutside(false); return pd_waiting; } public void showProgressDialog() { if (null != pd_waiting) { pd_waiting.show(); } else { logE("--pd_waiting->" + pd_waiting); } } public void cancelProgressDialog() { if (null != pd_waiting) { getUIHandler().postDelayed(new Runnable() { @Override public void run() { pd_waiting.cancel(); } }, 2000); } else { logE("--pd_waiting->" + pd_waiting); } } /** * ?sendUIMessage??initUIHandler??mUIHandler */ public void initUIHandler() { if (null == mUIHandler) { mUIHandler = new UIHandler(this); } } /** * UIHandlerhandler * * @return */ public UIHandler getUIHandler() { if (null == mUIHandler) { logE("UIHandler "); } return mUIHandler; } /** * ?UIHandler???? * * @param msg */ public void handleUIMessage(Message msg) { // super ????? } // ????sendUIMessage?handler???getUIHandler?? public void sendUIMessage(Message msg) { if (null != mUIHandler) { mUIHandler.sendMessage(msg); } else { uiHandlerNotInit(); } } public void sendUIMessageEmpty(int what) { sendUIMessageEmptyDelayed(what, 0); } public void sendUIMessageEmptyDelayed(int what, long delayMillis) { if (null != mUIHandler) { mUIHandler.sendEmptyMessageDelayed(what, delayMillis); } else { uiHandlerNotInit(); } } /** * ?onDestroy??? */ public void recycleUIHandler() { if (null != mUIHandler) { mUIHandler.removeCallbacksAndMessages(null); } } /** * ?handleWorkerMessage??initWorkerHandler??mWorkerHandlermHandlerThread * * @param name */ public void initWorkerHandler(String name) { if (mHandlerThread == null && mWorkerHandler == null) { mHandlerThread = new HandlerThread(name); mHandlerThread.start(); mWorkerHandler = new WorkerHandler(mHandlerThread.getLooper(), this); } else { logE("initWorkerHandler is called ,don't called again!"); } } public void initWorkerHandler() { initWorkerHandler("workThread"); } /** * UIHandler ? */ public void uiHandlerNotInit() { // showToastShort("UIHandler ?"); logE("UIHandler ?"); } /** * mWorkerHandler,?WorkerHandler * * @return */ public WorkerHandler getWorkerHandler() { if (null == mWorkerHandler) { logE("?WorkerHandler"); } return mWorkerHandler; } /** * ?WorkerHandler???? * * @param msg */ public void handleWorkerMessage(Message msg) { // super ????? } // ????sendWorkerMessage?handler???getmUIHandler?? public void sendWorkderMessage(Message msg) { if (null != mWorkerHandler) { mWorkerHandler.sendMessage(msg); } else { workerHandlerNotInit(); } } public void sendWorkerMessageEmpty(int what) { if (null != mWorkerHandler) { mWorkerHandler.sendEmptyMessage(what); } else { workerHandlerNotInit(); } } /** * WorkerHandler ? */ private void workerHandlerNotInit() { // showToastShort("WorkerHandler ?"); logE("WorkerHandler ?"); } public void recycleWorkerHandler() { if (null != mHandlerThread && null != mWorkerHandler) { mHandlerThread.quit(); mWorkerHandler.removeCallbacksAndMessages(null); } } public static class UIHandler extends Handler { WeakReference<BaseFragment> weakReference; /** * Handler ????Handler ????? Handler TLS(Thread Local Storage)?? Activity ? * Handler Activity * * @param fragment */ public UIHandler(BaseFragment fragment) { super(Looper.getMainLooper()); this.weakReference = new WeakReference<BaseFragment>(fragment); } @Override public void handleMessage(Message msg) { super.handleMessage(msg); final BaseFragment fragment = weakReference.get(); if (null != fragment) { fragment.handleUIMessage(msg); } } } /** * Handler??AsyncTask??? */ public static class WorkerHandler extends Handler { WeakReference<BaseFragment> weakReference; public WorkerHandler(Looper looper, BaseFragment fragment) { super(looper); this.weakReference = new WeakReference<BaseFragment>(fragment); } @Override public void handleMessage(Message msg) { super.handleMessage(msg); final BaseFragment fragment = weakReference.get(); if (null != fragment) { fragment.handleWorkerMessage(msg); } } } }