My Android advanced tutorial ------) Solve the Problem of automatic uppercase of English strings on the android Button

My Android advanced tutorial ------) Solve the Problem of automatic uppercase of English strings on the android Button

Today, I encountered a question about the Button: The English string on the android Button is automatically converted to uppercase, And the Android 5.1 version is running, as shown in:

Figure 1: Button

Figure 2: TextView

 

The code for defining this Button is as follows:

 

The TextView definition code is as follows:

 

 

 

Reference the same string contactList_addContact. The content of the string is as follows:

 

 
  Add
 

 

However, the Button is displayed as ADD, while the TextView is displayed as Add. I have never met before, so I'm depressed. Other buttons are displayed normally as follows:

The two buttons are defined as follows:

 

The referenced string is:

 

 

 
 
  Cancel
  
 
  Save
 

 

Well, the above is the problem. As to why this problem occurs, I guess the Android 5.1 SDK has changed the default Style of the Button, and the Style has set textAllCaps to true by default, I have not studied it carefully. View the code selected by the system: Row 233rd of frameworks/base/core/res/values/styles_material.xml. The Code is as follows:

 

We can find that the textAllCaps attribute is set to true.

The following describes how to solve this problem. You only need to Add the android: textAllCaps = false attribute to the Add button definition. This attribute is used to set whether to use uppercase letters to render text.

 

The code is changed to the following:

 

Okay, so we can solve the problem. After the change, we will see the following: