Android系统源码定制修改

修改系统默认时间显示为24小时制

目前只针对安卓7.1.1进行了修改测试
源码路径：
frameworks/base/packages/SettingsProvider/res/values/defaults.xml
添加:

1	<string name="def_time_12_24" translatable="false">24</string>

源码路径：
frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java
添加:

private void loadSystemSettings(SQLiteDatabase db) {
...
    loadStringSetting(stmt, Settings.System.TIME_12_24, R.string.def_time_12_24);
...
}

去除“从顶部向下滑动即可退出全屏模式”

framework/base/services/core/java/com/android/server/policy/ImmersiveModeConfirmation.java

private final class H extends Handler {
    private static final int SHOW = 1;
    private static final int HIDE = 2;

    @Override
    public void handleMessage(Message msg) {
        switch(msg.what) {
            case SHOW:
+                //handleShow();
                break;
            case HIDE:
+                //handleHide();
                break;
        }
    }
}