Android:将按钮高度设置为与宽度相同 [英] Android: set button height same as width

问题描述

这是我的布局的一部分.我需要按钮才能成为完美的正方形.行中将有4个按钮.滚动视图中将有更多行.每行将适合任何屏幕尺寸的屏幕宽度.我已经尝试了很多解决方案，但是没有达到我想要的效果.然后，我还需要使按钮具有动态的文本，以便每次填充按钮的宽度.有什么解决办法吗?我已经尝试了好几个星期.

This is part of my layout. I need buttons to be perfect squares. There will be 4 buttons in row. There will be more rows in scrollview. Every row will fit the screen width for any screen size. I have tried ton of solutions but nothing works as I want to. Then also I need to have the text dynamic as the buttons so it everytime fills the button width. Is there any solution? I am trying this for weeks.

<TableRow
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp"
            android:layout_marginTop="10dp">

            <Button
                android:id="@+id/button4"
                android:layout_width="match_parent"
                android:text="@string/r1960"
                android:textColor="#ffffff"
                android:textSize="@dimen/loptatext"
                android:shadowColor="#000000"
                android:shadowRadius="7"
                android:layout_weight="1"
                android:background="@drawable/tlacitko_stav" />

            <Button
                android:id="@+id/button5"
                android:layout_width="match_parent"
                android:text="@string/r1964"
                android:textColor="#ffffff"
                android:textSize="@dimen/loptatext"
                android:shadowColor="#000000"
                android:shadowRadius="7"
                android:layout_weight="1"
                android:background="@drawable/tlacitko_stav" />

            <Button
                android:id="@+id/button6"
                android:layout_width="match_parent"
                android:text="@string/r1968"
                android:textColor="#ffffff"
                android:textSize="@dimen/loptatext"
                android:shadowColor="#000000"
                android:shadowRadius="7"
                android:layout_weight="1"
                android:background="@drawable/tlacitko_stav" />

            <Button
                android:id="@+id/button7"
                android:layout_width="match_parent"
                android:text="@string/r1972"
                android:textColor="#ffffff"
                android:textSize="@dimen/loptatext"
                android:shadowColor="#000000"
                android:shadowRadius="7"
                android:layout_weight="1"
                android:background="@drawable/tlacitko_stav" />
        </TableRow>

推荐答案

您可以扩展Button并将其强制为方形，如下所示:

You could extend Button and force it to be square, like this:

public class SquareButton extends Button {
    public SquareButton(Context context) {
        super(context);
    }

    public SquareButton(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public SquareButton(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public SquareButton(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int width = MeasureSpec.getSize(widthMeasureSpec);
        int height = MeasureSpec.getSize(heightMeasureSpec);
        int size = width > height ? height : width;
        setMeasuredDimension(size, size);
    }
}

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