see blocked numbers on android

1. In the Android system, after entering text in the text box, the operation button is blocked by the input method. You have to disable the input method to continue the operation. This is always the case by default, which is very troublesome. 2. So I checked some information and finally found the method. Let's take a look at the code and effects: It can be seen that this has been achieved to avoid the u

determined. However, once fully divided, the placeholder values of numbers and letters are the same as those of a Chinese character, in this way, the layout problem caused by placeholder can be avoided. 5. English Document Layout: When textview is automatically changed, the word integrity should be maintained. The solution is to calculate the string length, and then manually set the number of letters displayed in each row with '\ n' added' 6. Use Rel

created when the JVM is started. The heap memory that the object occupies is reclaimed by the automatic memory management system, which is the garbage collector.Heap memory is made up of surviving and dying objects. The surviving objects are accessible to the app and are not garbage collected. The object of death is the object that the app is inaccessible and has not been reclaimed by the garbage collector. Until the garbage collector reclaims these objects, they will occupy the heap memory spa

Problem descriptionR cannot is resolved to a variableCause of the problemThe naming specification when defining an ID causes compilation errors, cannot use numbers, must use the English alphabetRemember not to do it again.In addition, there may be other reasons why R cannot is resolved to a variable, many times R.java not generated due to various reasons, the troubleshooting method is as followsReprinted from http://blog.csdn.net/jason0539/article/det

static final(17) Try to use HashMap and ArrayList, unless necessary, it is not recommended to use Hashtable and vectors, the latter due to the use of synchronization mechanism, resulting in performance overhead.This blog post is nearing the end. Finally, the optimization of Java code in Android development.In Android development, avoid using the internal get, set method as much as possible.In

Android Studio does not show line numbers by default, and many students are not used to it. This experience shows how to let Android studio display line numbers.First we open our download installed Android StudioThen right-click the tool buttonSelect Editor--->apperence---->show lines numberAnd then you can

Preface When reading the address book of the Android system, the contacts are generally read first and then their numbers are read in a nested loop. If the number of contacts in the address book is small, the speed is acceptable, but the number of people in the address book is 1 to 2, I am afraid it will be slow. If the hardware is almost worse, the experience will be worse. AvailableContactsContract. Commo

extends:http://blog.csdn.net/wx_962464/article/details/8471195In fact, this is very simple, in Android has been implemented for us, but I guess a lot of people do not know. including me. So write it down for everyone to see and learn.The core is to add a property in the TextView, add android:autolink= "Email|phone|web" so our program will proactively identify our email address, our phone number, as well as