Three lines of Android code to achieve smooth switching between day and night modes

Usage xml android:background= ? Attr / zzbackground app: backgroundattr = zzbackground / / if the current page needs to be refreshed immediately, an attribute name such as r.attr Just pass zzbackground to Android: textcolor =? attr/zztextColor app:textColorAttr= zztextColor //

Demonstration effect

Usage xml

java

Detailed operation description

Step 1: Customize attributes

Step 2: configuration file

Set the attribute value of the corresponding mode for related attributes:

Step 3: configure and use the corresponding attributes in the layout file

Note the textcolorattr, backgroundattr, and backgrounddrawableattr attributes. If you want to refresh the current page immediately, you need to fill in the corresponding attributes.

Step 4: call java code on the page

The code calls three steps to start the night trip. If there is a newly created view on the page to add night mode control, the Android source code calls:

If there are other non-standard defined properties when changing the night mode, you can use changemodecontroller Changeday or changemodecontroller After changeNight, the following code is called to assign the relevant attributes: TypedValue attrTypedValue = ChangeModeController. getAttrTypedValue(this,R.attr.zztextColor); toolbar. setTitleTextColor(getResources().getColor(attrTypedValue.resourceId));

Source code download address: http://xiazai.jb51.net/201609/yuanma/AndroidChangeMode (jb51.net). rar

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