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SquareLinearLayout（高等于宽的自适应LinearLayout）

2024-08-07 03:55:20   218人阅读

Android环境

GridView等场景，指定每行个数、行数，SquareLinearLayout就会自适应填满GridView

[1].[代码] 正方形 跳至 [1] [2] [3]

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publicclass SquareLinearLayout extendsLinearLayout {
 
    publicSquareLinearLayout(Context context) {
        super(context);
    }
 
    publicSquareLinearLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
     
    @Override
    publicvoid onMeasure(intwidthMeasureSpec, intheightMeasureSpec) {
     
        super.onMeasure(widthMeasureSpec, widthMeasureSpec);
    }
     
}

[2].[代码] 自定义高宽比 跳至 [1] [2] [3]

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publicclass SquareLinearLayout extendsLinearLayout {
 
    publicSquareLinearLayout(Context context) {
        super(context);
    }
 
    publicSquareLinearLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
     
    @Override
    publicvoid onMeasure(intwidthMeasureSpec, intheightMeasureSpec) {
        intwidth = MeasureSpec.getSize(widthMeasureSpec);
        intheight = Math.round(width*0.9f);
        intmode = MeasureSpec.getMode(widthMeasureSpec);
        super.onMeasure(MeasureSpec.makeMeasureSpec(width, mode), MeasureSpec.makeMeasureSpec(height, mode));
    }
     
}

[3].[代码] girdview_item.xml 跳至 [1] [2] [3]

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<?xmlversion="1.0"encoding="utf-8"?>
<com.custom.SquareLinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical">
 
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:gravity="center"
        android:orientation="vertical">
 
        <TextView
            android:id="@+id/name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="@android:color/black"/>
 
        <ImageView
            android:id="@+id/icon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"/>
 
    </LinearLayout>
 
</com.custom.SquareLinearLayout>

SquareLinearLayout（高等于宽的自适应LinearLayout）


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