Android Optimization-UI optimization (1), android ui Optimization

Android Optimization-UI optimization (1), android ui Optimization
Optimize layout level 1. Avoid layout mosaic depth (as shown 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 remove the id as follows:main_ll_duoyuThe LinearLayout of can also achieve the desired effect (the effect is as follows)

2. Use tools to view the Layout

• Tool Path

Sdk \ tools \ hierarchyviewer. bat | double-click to open

• View Layout Comparison
  
  
  

Now we have removedmain_ll_duoyuThis LinearLayout of, we have a lower layer than the first two and the most, here is just an example, these tools provided by google can help us optimize the app and increase the smoothness of user experience.

3. default maximum layout depth

The default layout depth for android is 10.