Programmer Group

No1: View sliding 1) Of the layout() method public class CustomView extends View{ private int lastX; private int lastY; public CustomView(Context context,AttributeSet attrs,int defStyleAttr){ super(context,attrs,defStyleAttr); } public CustomView(Context context,AttributeSet attrs){ super(context,attrs); ...

Practice to get real knowledge, do the code! In the drawing process of Android View, in the onLayout() method, the child view will call the layout() method to complete its own layout. We can change the parameters of view layout() to achieve the sliding effect of view! 1. Implementation steps 2. Effect 2.1. La ...

Call camera to take photos: @Override public void onClick(View v) { //Create a File object to store pictures after taking photos File outputImage = new File(getExternalCacheDir(),"output_image.jpg"); try { if (outputImage.exists()) { outputImage.delete(); } ou ...

The comment function is used in many projects. When users click comment, an input box will pop up for input, such as the following figure: Here is the small demo: demo address: https://github.com/midux001/InputDialog The main page is a recycler view, which simulates some comment data. When the user clicks a comment, ...

Preface Everyone will read the latest news on the browser every day. As an IT programmer, you will find that their layout and layout are different. Sometimes, there are 4 or 5 interfaces for the same style of items, and 1 appears below There are different items. Is the effect beautiful? This is called multi layout in Android. L ...

When doing Android development, we must pay attention to that the main thread cannot change the UI interface. If there is a crash when the program is running, and if there is no obvious syntax error, please check whether there is a conflict or crash in your own process. If there is a connection with the background, that is, when the request is ...

Flow chart of dynamic application authority: Tool class of dynamic permission Core code used by tool class: Android 6.0 or above (API > = 23), or build.version.sdk ﹐ int > = build.version ﹐ codes. M, sensitive permissions like camera, location, mobile phone address book, phone call and other permissions need ...

1. Grab APP data package Please refer to this blog post for detailed methods: http://my.oschina.net/jhao104/blog/605963 Get the login address of the super curriculum: http://120.55.151.61/V2/StudentSkip/loginCheckV4.action Form: The form includes the user name and password. Of course, they are all encrypted. There is also a de ...

Custom ring chart In Android development, native controls can only meet the needs of most of the time. For some special styles, custom controls are needed to implement them. Next, a circular icon is implemented. The key classes needed are Paint,RectF,Matrix,Path Basic thinking 1. rings It can be seen that the circle ...

[Android] [Android] custom fillet image. You can set whether any corner is fillet in xml This blog has been included in my android development summary - Click [Android development summary] This blog has a reference blog[ android customize a fillet ImageView] Compared with the original blog, this blog has the following imp ...