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This article mainly shows you "Android how to achieve apk plug-in way skin", the content is simple and easy to understand, organized clearly, I hope to help you solve doubts, let Xiaobian lead you to study and learn "Android how to achieve apk plug-in way skin" this article bar.

1. When do you peel?

Xml load before skin, if xml load after skin, users will see the color before skin, user experience is not good.

2. What is skin?

Skin is apk, is a resource package, contains colors, pictures and so on.

3. What controls should be skinned?

Controls that contain background pictures, such as textView text colors.

4. How do skins match installed assets?

Resource name matches

Steps:

1.Skinning before loading xml means collecting controls that need to be skinned. So listen for xml loading.

public class BaseActivity extends Activity { SkinFactory skinFactory; @Override protected void onCreate(@Nullable Bundle savedInstanceState){ super.onCreate(savedInstanceState); //Listen for xml generated procedures skinFactory = new SkinFactory(); LayoutInflatorCompat.setFactory(getLayoutInflater(),skinFactory); }}

2. Controls that need to be skinned are collected into a container and skinned directly without changing their logic (e.g., without adding: " app: ..." to each space that needs to be skinned). "Custom Control Properties)

Thinking:

(1) Is the id of the apk installed the same as the skin id?

(2) Image resources and color resources correspond to ID automatically generated by R.

(3) Are the resource id of the skin package, the resource id of the R file, and the resource id of the R file in the app the same? -- is different

3. An activity has multiple controls (SkinView) One control corresponds to multiple skinItem properties (SkinItem)

SkinItem encapsulates these values:

attrName-attribute name (background) attrValue-attribute value id hex (@color/colorPrimaryDark) attrType--type (color) Id(id of R file)

class SkinItem{ // attrName background String attrName; int refId; //sourceName @color/colorPrimaryDark String attrValue; // drawable color String attrType; public SkinItem (String attrName, int refId, String attrValue, String attrType) { this.attrName = attrName; this.refId = refId; this.attrValue = attrValue; this.attrType = attrType; } public String getAttrName() { return attrName;} public int getRefId() { return refId; } public String getAttrValue() { return attrValue; } public String getAttrType() { return attrType; } }

SkinView：

class SkinView{ private View view; private List list; //Collect collections that need to be skinned public SkinView(View view, List list) { this.view = view; this.list = list; } }

4. After collection, apply skinning (skinning during xml loading)

Create SkinManager to get skin apk, app Get skin apk via SkinManager

(1) Load Skin: Get the addAssetpath() method of AsserManager through reflection, and then get the skin apk through this method, so as to instantiate skinResource; then get the skin package name through PackageManager.getPackageArchiveInfo(path,PackageManager.GET_ACTIVITIES).packageName;

(2) getColor: judge whether skinResource is empty; get the name of res, eg: find id through "colorAccent"

The above is "Android how to achieve apk plug-in way skin" all the content of this article, thank you for reading! I believe that everyone has a certain understanding, hope to share the content to help everyone, if you still want to learn more knowledge, welcome to pay attention to the industry information channel!

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