Efficient extraction of loading, no more loading pages are not afraid

Today's app basically has two operations, one is to load the data, and the other is to display the data on the page. But if the page is more specific. To load data on each page, write the loading page. I used to write with dialog and extract a class. Where you need it, add the following code there. I've found that I've been adding loading code for most of the time. The total overtime for this purpose.
Please refer to this article for unlimited reference: http://blog.csdn.net/wanghao200906/article/details/46805085

Here are the times when the pages are more state

It's going to be a little bit more. Not only is the code not good-looking, but also I'm too tired to panic

Let's take a look at how to write loading efficiently.

General page has four kinds of situation
Loading: Is scrolling the page, the background to get the loaded data, each page of data is different so let the subclass to achieve, direct abstraction abstract.
Load failure: typically requires a click and reload
Empty page: Also need to click and reload
Load success: Display a successful page, each page is different so let the subclass implementation, it must be abstract abstraction

What I have taken is that each page is framelayout to display the loaded page. A total of four pages. Return a state by loading the data to let the page display the corresponding animation

first , a few thoughts.
1 load three pages first, execute loading page at the beginning
2 loading data, using the thread pool processing time-consuming hype, how to access the network to let subclasses to determine whether the data is available
3 data available to display a successful interface
Data unavailable display load Failure page
List of data such as 0 loading empty pages
Directly below the code time:

 PackageCom.example.every_text.view;ImportCom.wang.cn.manager.ThreadManager;ImportCom.wang.cn.utils.UIUtils;ImportAndroid.content.Context;ImportAndroid.os.SystemClock;ImportAndroid.util.AttributeSet;ImportAndroid.view.View;ImportAndroid.widget.FrameLayout;/** * First Order load-->showpagerview-->createsuccessview * * @author Wanghao * * Time-consuming operations in subclasses are put into load, then load returns A state, in Showpagerview, selects the displayed page according to the status * if installed on is successful. So long show Createsuccessview * * Public Abstract  class loadingpager extends framelayout {    //Load the default state    Private Static Final intstate_unloaded =1;//Load status    Private Static Final intState_loading =2;//Load Failed status    Private Static Final intState_error =3;//Load Empty state    Private Static Final intState_empty =4;//Load Status of Success    Private Static Final intState_succeed =5;PrivateView Mloadingview;//view in circles    PrivateView Merrorview;//Wrong view    PrivateView Memptyview;//Empty view    PrivateView Msucceedview;//Successful view    Private intMstate;//Default status    Private intLoadpage_empty;Private intLoadpage_error;Private intloadpage_loading; Public Loadingpager(Context context,intLoadingintErrorintEmpty) {Super(context);        Loadpage_empty = empty;        Loadpage_error = error;        loadpage_loading = loading;    Init (); } Public Loadingpager(context context, AttributeSet attrs,intDefstyle,intLoadingintErrorintEmpty) {Super(Context, attrs, Defstyle);        Loadpage_empty = empty;        Loadpage_error = error;        loadpage_loading = loading;    Init (); } Public Loadingpager(context context, AttributeSet attrs,intLoadingintErrorintEmpty) {Super(context, attrs);    Init (); }Private void Init() {//Initialization statusMstate = state_unloaded;//Initialize view of three states this time the view of three states is superimposed on one another.Mloadingview = Createloadingview ();if(NULL! = Mloadingview) {AddView (Mloadingview,NewLayoutparams (Layoutparams.match_parent, layoutparams.match_parent)); } Merrorview = Createerrorview ();if(NULL! = Merrorview) {AddView (Merrorview,NewLayoutparams (Layoutparams.match_parent, layoutparams.match_parent)); } Memptyview = Createemptyview ();if(NULL! = Memptyview) {AddView (Memptyview,NewLayoutparams (Layoutparams.match_parent, layoutparams.match_parent));    } showsafepagerview (); }Private void Showsafepagerview() {//Run directly to the main threadUiutils.runinmainthread (NewRunnable () {@Override             Public void Run() {Showpagerview ();    }        }); }Private void Showpagerview() {//This is not an empty mstate state_unloaded state, so it only shows lodaing the following error        //And empty temporarily not displayed        if(NULL! = Mloadingview) {mloadingview.setvisibility (mstate = = State_unloaded | | mstate = State_lo Ading?        View.VISIBLE:View.INVISIBLE); }if(NULL! = Merrorview) {merrorview.setvisibility (mstate = = State_error?        View.VISIBLE:View.INVISIBLE); }if(NULL! = Memptyview) {memptyview.setvisibility (mstate = = State_empty?        View.VISIBLE:View.INVISIBLE); }if(Mstate = = State_succeed && Msucceedview = =NULL) {Msucceedview = Createsuccessview (); AddView (Msucceedview,NewLayoutparams (Layoutparams.match_parent, layoutparams.match_parent)); }if(NULL! = Msucceedview) {msucceedview.setvisibility (mstate = = State_succeed?        View.VISIBLE:View.INVISIBLE); }    } Public void Show() {//The first time in the circle must be in the circle so it is error and empty also want to let the state is unload        if(mstate = = State_error | | mstate = = state_empty)        {mstate = state_unloaded; }//If it's unload, turn the state into loading. Take the data from the server        if(mstate = = state_unloaded)            {mstate = state_loading; Taskrunnable task =NewTaskrunnable ();        Threadmanager.getlongpool (). Execute (Task);    } showsafepagerview (); }/** * Production interface * * @return  * *    protected AbstractViewCreatesuccessview();/** * Processing download time-consuming operation * * @return  */    protected AbstractLoadresultLoad();/** * Empty interface * * @return  * *     PublicViewCreateemptyview() {if(Loadpage_empty! =0) {returnUiutils.inflate (Loadpage_empty); }return NULL; }/** * Failed page * * @return  * *     PublicViewCreateerrorview() {if(Loadpage_empty! =0) {returnUiutils.inflate (Loadpage_error); }return NULL; }/** * Spinning page * * @return  * *     PublicViewCreateloadingview() {if(Loadpage_empty! =0) {returnUiutils.inflate (loadpage_loading); }return NULL; } class Taskrunnable implements Runnable {@Override         Public void Run() {FinalLoadresult loadresult = load (); Systemclock.sleep ( -); Uiutils.runinmainthread (NewRunnable () {@Override                 Public void Run() {mstate = Loadresult.getvalue ();                Showpagerview ();        }            }); }    } Public enumLoadresult {ERROR (3), EMPTY (4), SUCCESS (5);intValue Loadresult (intValue) { This. value = value; } Public int GetValue() {returnValue }    }}

Here's how to use the

 PackageCom.wang.cn.base;ImportCom.example.every_text.view.LoadingPager;ImportCom.example.every_text.view.LoadingPager.LoadResult;ImportCOM.WANG.CN.R;ImportCom.wang.cn.utils.UIUtils;Importandroid.app.Activity;ImportAndroid.os.Bundle;ImportAndroid.view.View;ImportAndroid.view.View.OnClickListener;/** * @author Wang * @version created: July 8, 2015 11:31:11 class describes the base class for activity */ Public Abstract  class baseactivity extends Activity {     PublicLoadingpager Loadingpage;@Override    protected void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate); Loadingpage =NewLoadingpager (Uiutils.getcontext (), r.layout.loadpage_loading, R.layout.loadpage_error, R.lay Out.loadpage_empty)//three pages loaded{@Override            protectedLoadresultLoad() {returnBaseactivity. This. Load ();//Pass to sub-class}@Override            protectedViewCreatesuccessview() {returnBaseactivity. This. Createsuccessview ();//Pass to sub-class}        };//You can clickLoadingpage.setonclicklistener (NewOnclicklistener () {@Override             Public void OnClick(View v)            {loadingpage.show (); }        });//Show loading pageLoadingpage.show ();    Setcontentview (Loadingpage); }/** * Refresh Page Project * * @return  */    protected AbstractViewCreatesuccessview();/** * Request the server to get the current status * */    protected AbstractLoadresultLoad();}

What about the base class calling the parent class?

 Packagecom.wang.cn;ImportAndroid.content.Intent;ImportAndroid.os.SystemClock;ImportAndroid.view.View;ImportAndroid.view.View.OnClickListener;ImportAndroid.widget.TextView;ImportCom.example.every_text.view.LoadingPager.LoadResult;Importcom.wang.cn.base.BaseActivity;ImportCom.wang.cn.utils.UIUtils;ImportCom.wang.cn.utils.ViewUtils;/** * @author Wang * @version created: July 8, 2015 11:31:11 class description main function */ Public  class mainactivity extends baseactivity {    //Refresh page Project    @Override    protectedViewCreatesuccessview() {View inflate = uiutils.inflate (R.layout.activity_main);        TextView Tv=viewutils.findviewbyid (inflate, r.id.textview1); Tv.setonclicklistener (NewOnclicklistener () {@Override             Public void OnClick(View v) {Intent intent=NewIntent (Uiutils.getcontext (), fragmetactivity.class);            StartActivity (Intent); }        });returnInflate; }//Refresh page Project    @Override    protectedLoadresultLoad() {Systemclock.sleep ( -);returnloadresult.success; }}

So, let's get started. Loading data and display code are all done. Don't ever have to worry about writing loading. Also need not because of handler get a lot of msg trouble where Add.
Code: http://download.csdn.net/detail/wanghao200906/8880719 (with tools I've used for years)

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

Efficient extraction of loading, no more loading pages are not afraid