studyjams notes 1B--width and height

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Thanks the android xml visualizer(open source)
you can use it by click here

width height

effects

code

<LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="@android:color/darker_gray">    <TextView        android:text="春"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:background="#4CAF50"        android:textSize="24sp" />    <TextView        android:text="夏"        android:layout_width="100dp"        android:layout_height="wrap_content"        android:background="#4CAF50"        android:textSize="24sp" />    <TextView        android:text="秋"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:background="#4CAF50"        android:textSize="24sp" />    <TextView        android:text="东"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:background="#4CAF50"        android:textSize="24sp" /></LinearLayout>

knowlege point

rule

conlusion

tea time

enjoy it!
Wish you like android more!

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