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Android simple animation animtion and androidanimtionAndroid's simple animation effects include the Animtion class. 1. Implement the animation effect in XML; 2. Implement the animation effect in java code.
Animation-related attributes
Table 1: SET attributes
Name
Attribute
Remarks
Android
Android practice simple tutorial-52nd guns (Communication Between Fragment and Activity), androidfragment
The use of Fragment makes our applications more flexible to adapt to various Android devices, but many friends should be unfamiliar with the communication between Fragment and Activity, next we will use an instance to see how to implement it.1. Activity-> Fra
The example in this article describes the simple implementation of Android programming to set the activity background to wallpaper. Share to everyone for your reference, specific as follows:
1) Code mode
Drawable wallpaper = Wallpapermanager.getinstance (this). Getdrawable ();
This.getwindow (). setbackgrounddrawable (wallpaper);
2) XML configuration
In the configuration of the activity, add:
This article illustrates the simple File Manager implementation approach for Android development. Share to everyone for your reference, specific as follows:
Here using Java I/O, listactivity, Dialog, bitmap and so on to implement a simple File manager, you can view the directory file, modify the file name, delete the file, open the file. Relatively
Android Studio Simple Introduction and Usage issues SummaryThis development tool was introduced by Google at the 2013 I/O developer conference. It has now been updated to version 0.5.8.Many of GitHub's projects are now developed using Android Studio, so if you still use eclipse, you need to split the entire project,And then in the project include dependent packag
First draw a map to understand the next Android database operation of the simple process:
1. First, write a help class for your own database operations, which inherits from the Android Sqliteopenhelper.
2. Some methods of using your own helper to write database operations at your own DAO layer
3.Activity invoke the DAO layer's database action method to opera
Android's own alertdialog,progressdialog,datepickerdialog,timepickerdialog can be used for simple dialog box display. You can use some custom dialog boxes when you still have these dialog boxes that don't meet your application's needs. There are several ways to implement a custom dialog box. One is the use of activity as a dialog, can be set by the activity Display dialog style, so that the activity in appearance and dialog consistent: shown in front
Simple use of SQLite databases in Android
File file = new File(“hah.txt ");
// Only an object file is created. The filepath refers to the hah.txtfile. The hah.txt file may or may not exist. If the file does not exist, it will not be created.
Only when a file output stream writes the file can the file be created.
Cursor: When you access a table structure in a database and want to access a row in the table,
Simple use of Android ActionBar and androidactionbar
ActionBar is actually Menu
1. Compile the menu interface in res/menu
Android: id = "@ + id/menu01"Android: icon = "@ android: drawable/ic_menu_rotate"Android: orderInCategory =
Projects often encounter the ability to retrieve the password, and now find the password is generally used to receive authentication code, in order to prevent multiple transmission, the general need to set a send interval, such as 60 seconds. In order to let users feel more clearly this interval, so there is a countdown function. The following figure:
After clicking, the TextView or button that gets the verification code becomes not clickable, and its text will change every second, 59,58,57 ...
tools such as Hudson and Jenkins have built-in Gradle tools, so we can expect more and more projects to use it.
As shown in, Android Studio allows you to view the layout of applications on different Android devices at the same time)
The most interesting part about Android Studio is what promises it brings to everyone. Its website publicity is "early preview ver
The following is a simple example of calculating the standard weight. Select your own gender, enter your height, and click the Button to display your standard weight in Toast, check whether your weight meets the standards.
Method for Calculating the standard weight:
Male :( height cm-80) × 70 = standard weight female :( height cm-70) × 60 = standard weight
BMIActivity. java
1. package com. lingdududu. bmi;
2.
3. import java. text. DecimalFormat;
4. im
In Android, using String-array is a simple way to extract XML resource file data.
Examples are as follows:
Put the corresponding data into the Arrays.xml file of the values folder
Copy Code code as follows:
And then in the activity, use it directly.
Resources Res =getresources ();String[] City=res.getstringarray (r.array.city);Can obtain String-array name= "City" under all the item dat
As we all know, dialing is the most important and commonly used function for a mobile phone.AndroidHow does one implement the dialing procedure? I wrote a simple call hereDemoFor your reference, there are five steps.
Step 1: CreateAndroidProject, namedPhonecalldemo.
Step 2:Design the program interface, openMain. xmlModify the content as follows:
Android: Orientation = "vertical"
to complete the card layout. Cardlib
Android-dragarea:android drag-and-drop sorting, drag and drop the mobile library. GitHub (This library is used for the drag-and-drop sequencing of Opera's Android browser)
Android-staggeredgrid:android the class Pinterest layout. GitHubAndroid class Pinterest Layout
Flipimageview: By extending the ImageView, various fli
Map we created the next is the protagonist's appearance. In fact, the above describes how to tiledmap and stage combination, the role of the processing is simple.
Can inherit the actor class to create the protagonist class, I will steal a lazy, with image instead.
Edit our TMX file and add an object layer.
Add a shape to where the protagonist is going to appear
Named Play1
Our main characters are:
The idea is that we go through all of th
It is not uncommon to refer to the text resources of other programs in Android, but it is sometimes necessary to refer mostly to the text resources of the system's programs.
Here's a super simple example to show how to do this.
Copy Code code as follows:
public void testuseandroidstring () {
Context context = GetContext ();resources res = NULL;try {I want to use the Clear_activities string
Custom ListView is required. Let's make floatdellistview here.
Replication Ontouchevent method. As follows:
@Override public boolean ontouchevent (motionevent ev) {switch (ev.getaction ()) {case Motionevent.action_d
own:
Floatdelbuttonlayou.java:
public class Floatdelbuttonlayout extends LinearLayout {
Above this Android ListView implementation of the iphone to implement the left-slip Delete button is a
(websettings.load_cache_else_network);
There are some attributes I will not speak out, interested in the search for their own.
Four, download the file
WebView sometimes contains links to downloaded files, and the files are downloaded to the local area after clicking the link. How to achieve it? The system provides us with a download interface Downloadlistener, the code is simple and convenient.
We simply write a class that implements this int
This article introduced the simple Weather app mainly uses rxandroid, the MVP, the retrofit realization, first looks at the effect:Home Page Content:
Right column weather list:
Left column City list
First look at the activity main code (using MVP mode):
Call the presenter method to get the data Mmainpresenter = new Mainpresenterimpl (this);
Mmainpresenter.getplacedata ();
Mmainpresenter.getweatherdata ("Chengdu");
Displays the home
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