Android System Modification time format is 24-hour

1. Frameworks/base/packages/settingsprovider/res/values/defaults.xml

Add <stringname= "time_12_24" >12</string>//24-hour change to 24

2. Frameworks/base/packages/settingsprovider/src/com/android/providers/settings/databasehelper.java file,

In the Loadsystemsettings () method, add

Loadstringsetting (stmt,settings.system.time_12_24,r.string.time_12_24);

3. "Settings-" date and time-"use 24-hour format, modify default to open"

Frameworks\base\core\java\android\text\format\dateformat.java

Switch

public static Booleanis24hourformat (context context) {

String value = Settings.System.getString (Context.getcontentresolver (),

SETTINGS.SYSTEM.TIME_12_24);

if (value ==null) {

Settings.System.putString (Context.getcontentresolver (),

Settings.System.TIME_12_24, "24");

Value = "24";

}

Returnvalue.equals ("24");

}

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Android System Modification time format is 24-hour