Android optimized--ui optimization (i)

Optimize the layout hierarchy 1. Avoid layout tessellation too deep (see below)

<linearlayout xmlns:android="Http://schemas.android.com/apk/res/android"xmlns:tools="Http://schemas.android.com/tools"Android:layout_width="Match_parent"android:layout_height="Match_parent"tools:context=". Mainactivity "> <linearlayout android:id="@+id/main_ll_duoyu"Android:layout_width="Match_parent"android:layout_height="Match_parent"> <textview android:text="@string/hello_world"Android:layout_width="Wrap_content"android:layout_height="Wrap_content"/> <linearlayout android:layout_width="Match_parent"android:layout_height="Match_parent"android:gravity="Center_horizontal"android:layout_gravity="Center_vertical"> <textview android:text="@string/hello_world"Android:layout_width="Wrap_content"android:layout_height="Wrap_content"/> </LinearLayout> </LinearLayout></LinearLayout>

We can completely remove the ID: main_ll_duoyu This linearlayout can also achieve the effect we want (the effect is as follows)

2. Use tools to view layouts

• Tool Path

Sdk\tools\hierarchyviewer.bat | Double-click Open

• View layout Comparison
  
  
  

We have now removed main_ll_duoyu this linearlayout, we are a little bit less than the first two graphs and the most one, here is just an example, you can use these tools provided by Google to help us optimize the app, to increase the flow of user experience

3. Default maximum layout depth

Android default to the layout depth of 10

Android optimized--ui optimization (i)