Small function: Mobile phone screenshot

First write a tool class:public class Screenshottool {private activity activity;Public Screenshottool (activity activity) {This.activity = activity;}Public Bitmap Getactivitybitmap () {/** get Decorview, this view is the interface you need */View

Use of the iOS simple block

1. The first methodDECLARE BLOCK:-(void) test: (int) param_1 completion: (void(^) (int)) completion;To implement BLOCK:-(void) Test: (int) param_1 completion: (void (^) (int)) Completion { int total = + +param_1; Completion (total); This must

Android completely quits the app

Android completely quits the appAndroid Android exit app, Singleton mode manage activityCitation: http://www.yoyong.com/archives/199Android Exit application calls Android.os.Process.killProcess (Android.os.Process.myPid ())or System.exit (0), which

iOS deep copy and shallow copy

Shallow copy the sample code: Nsmutablearray *marray = [Nsmutablearray arraywithobjects: [nsmutablestring stringwithstring: @ "OrigionA"], [nsmutablestring stringwithstring: @ "origionb"],

Leetcode No. 202 Question-happy number

To tell the truth, if you do not look at the answer of others, this problem I also have no train of thought, do not know the loop several times, also do not know the termination condition of the cycle, then know, " 2-6" This range of numbers are

Introduction to Android Development Alertdialog Usage Summary

For the development of the message you may be unfamiliar, that is, after clicking some buttons, will give the user a feedback message, this is the function of the prompt message, good message can give users a good user experience, so we today's

iOS call System album, camera display Chinese title

recently do the Avatar upload function need to use the system album, Camera , in the call System album, the camera found in the English system Photo album interface after the title display "Photos", but the phone language has been set to display

Layout file in res in Android report null pointer problem layout_galazuser_center.xml:java.lang.NullPointerException

Error message: Only one part was interceptedJava.lang.NullPointerExceptionat Android.graphics.Canvas_Delegate.restoreTo (canvas_delegate.java:1175) at Android.graphics.Canvas_Delegate.restoreToCount (canvas_delegate.java:268) at

iOS development--a control cannot be seen when it is added.

A control is invisible to the naked eye, and what is possible1. No instantiation of this control is created at all2. No size set3. the color of the control is the same as the background color of the parent control (it is actually displayed, but

Service of Android four components

1.service services such as Windows below are similar, no user interface, just work in the background, such as music playback, download can use the service2. How theactivity is bound to the service and how to initiate its own service in the

Android Real-Machine Debug error install_failed_insufficient_storage workaround.

About this magical memory is not enough error of the usual solution, online a lot, we recommend that you try to go through the online method after the try my method.Compilation Tool: Android StudioTest real machine: M 2When debugging appears:

Menuinflater instances in Android

We know that Layoutinflater is used to instantiate the entire layout file, while Menuinflater is used to instantiate the menu layout file under the menu directory.The traditional menu definition needs to override the activity of the

Layoutinflater instances in Android

There are many similarities between the use of Layoutinflater and Findviewbyid.Such as: they can all return to view by ID.Layoutinflater inflater = Getlayoutinflater ();View layout = inflater.inflate (r.layout.custom_dialog,null);Button button =

IOS Third Day

1 operatorArithmetic operator +-*%/The return value of a comma expression is the return value of the last expressionsizeof calculates the number of bytes occupied by a variable or constantunsigned int type size_t2 arraysOne-dimensional

DX tool (Android turns jar package into DEX format binary jar package tool)

Blog Category: Android Clock DX Tool binary JAR PackageWell, I have to admit that this tool is really hard to find, do not know how the SDK has been in the past, fortunately to the teacher a copy, now reload the system from the Internet

JavaScript Call and apply

Use:Each function contains two non-inherited methods: Call and apply. Their purpose is to invoke the function in a particular scope, which is actually equivalent to setting the value of this in the function body.Statement block: Fn.call

Multi-level cache policy in mobile apps

The original text is also published in the author's personal blog, Welcome to visit: http://www.koulianbing.com/?p=23In the process of running the app, many random, fragmented and unstructured data are generated, which is a difficult point in data

To rebuild an index after moving a table to a new table space

When you move multiple database tables in a table space to another table space, Oracle makes an error when querying, inserting, and so on in the new library because there is no processing index:ORA-01502: Index ' WWYSBI41. sys_c0027004 ' or

Android Simple control Code

/hello_word/res/layout/activity_main.xml Graphical Layout/activity_fullsreen.xml (layout/) Code and Settings Interface

Android Development Issue Highlights

Android client + python service side (django Framework)---issue Highlights1: very strange thing, get and post submit wayVarious methods tried, always unsuccessful, The result is a URL problem,Http://xxxx/xxxxx really have no way to directly on the

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