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Android transmits objects and object arrays between multiple activities Assume that the object is in the People class, including the information name and age: public class People{public String strName;public int iAge;public People(String strName,int iAge){this.strName = strName;this.iAge = iAge;}public String getName(){return strName;}public int getAge(){return iAge;}} Method 1: Serializable Required condit
Multiple applications of Toast in android Development The most basic function of Toast is to bring up a weak prompt. This is simple and I will not talk about it. Let's talk about some other functions of Toast. When I came to the company, version 1.0 of the company's products had been released, but Version 1.0 is a product that must be connected to the Internet. In version 2.0, users can also use it offline,
Android solves the problem of white space in ListView when ListView uses multiple la S and uses convertView for caching. When using ListView, using convertView In the Adapter will improve the performance of ListView by 100%? But today we found that while loading different views at the same time in the listView, there will be a blank space at the bottom of the ListView. It may happen that this may be caused
Android gets multiple recent photos from the album (get the photos stored by the camera) When you are working on a company project, you need to customize the grid view of the displayed photos to display the first 20 photos that you have taken with a recent camera. I checked the API provided by the system and did not find the path constant pointing directly to storing photos after taking photos with a camer
Multiple android fragment return keys Add to the running stack when the fragment of the FragmentActivity jumps, Public void switchFrag (BaseFragment to) {getSupportFragmentManager (). beginTransaction (). replace (R. id. frag_login_content, to). addToBackStack (null). commit ();} PopStack @ Override public boolean onKeyDown (int keyCode, KeyEvent event) {if (keyCode = KeyEvent. KEYCODE_BACK) {// returns
Define an array, and then put the markers into the array, let the back loop each Marke object, give the listener events, write other functions in the listening event;JS Example:var New Arry (); var marker;xuanhuan{ insertmarkercontent (); Arr.push (marker); }mapobj.addoverlays (arr,true); // this must be before the event is monitored, otherwise the error is no object for (var i=0; i) { Mapobj.addeventlistener (Arr[i],mouce_click, Fucntionname);}Andro
Example code:View.settag (r.string.action_settings,hodler.content);Receive two values, one is the key value, must be a unique value, and is written in Values/string.xml, for example.......The last call is as follows:View.settag (R.ID.FFFFFF, the value you want to save);When you have more than one value to save, just write it!Android Settag two times, save multiple values
When you frequently encounter a character-splitting string in a project, you can split it by using the Split function of the string object.First look at the actual situation:" key Words 1 keywords 2 keyword 3"; = Str.split (""); for (String word:words) { System. out . println (Word); } The results are as follows:Keyword 1Keyword 2Keyword 3But my goal is to output the following execution results:Keyword 1Keyword 2Keyword 3Look directly at the code:" key Words 1 keywords
1. Rewrite EditText Public classLinededittext extends EditText {PrivatePaint Linepaint; Private floatmargin; Private intPapercolor; PublicLinededittext (Context paramcontext, AttributeSet paramattributeset) {super (Paramcontext, Paramattributeset) ; This. Linepaint =NewPaint (); } protected voidOnDraw (Canvas paramcanvas) {Paramcanvas.drawcolor ( This. Papercolor); inti =Getlinecount (); intj =getheight (); intK =getlineheight (); intm =1+ J/K; if(I m) I=m; intn =Getcompoundpaddin
Recently learned about some network requests in the Android environment, some of which are about network downloads. Here to analyze your own written demo, summarize what you have learned. For demo, follow some app download mall list add-ons in the ListView, then you can download and stop.1. OverviewHere are a few of the more important classes Downloadmanager, Downloadservice, Downloadtask, Threaddaoimpl. The main download process is as follows.(1) Dow
Customize a Nodoubleclicklistener, inherit from Onclicklistener:public abstract class Nodoubleclicklistener implements View.onclicklistener {public static final int min_click_delay_time = +; Private long lastclicktime = 0; @Override public void OnClick (View v) { long currenttime = Calendar.getinstance (). Gettimeinmillis (); if (Currenttime-lastclicktime > Min_click_delay_time) { lastclicktime = currenttime; Onnodoubleclick (v); } } p
Recently tried to do a ListView multiple selection demo, the Internet to see other people's example feeling is not very difficult, do-it-yourself, the various details of the problem, not so simple ah. Now that you've done it, simply write a note down.Practicing demo, name notes Chaos, don't mind oh. Main interface Layout Activity_main.xml Layout of list item The layout of this item is in the details of the pit once, the item
This article comes from:Hunter's Blog (http://my.oschina.net/hunterXue/blog/15107) Multiple annotations found at this line:-Error:multiple substitutions specified in non-positional format; Did you mean to add the formatted= "false"Attribute?-Error:unexpected End Tag StringAfter repeated checking, it was found that% of String.xml caused the compilation to fail.This is because the new SDK uses a new version of AAPT (the
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