我如何设置一个固定的宽度为Android的按钮？每次我尝试设置一个固定的宽度它填补了当前父（该RelativeView）。这里是我的XML：

How can I set a fixed width for an Android button? Everytime I try to set a fixed width it fills the current parent (the RelativeView). Here is my XML:

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout android:id="@+id/relativelayout" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android">

    <EditText android:layout_height="wrap_content" android:editable="false" android:layout_width="fill_parent" android:id="@+id/output"></EditText>

    <Button android:layout_height="wrap_content" android:id="@+id/Button01" android:layout_below="@id/output" android:text="7" android:layout_width="wrap_content"></Button>
    <Button android:layout_below="@id/output" android:layout_height="wrap_content" android:layout_width="wrap_content" android:id="@+id/Button02" android:layout_toRightOf="@+id/Button01" android:text="8"></Button>
    <Button android:layout_below="@id/output" android:layout_height="wrap_content" android:layout_width="wrap_content" android:id="@+id/Button03" android:layout_toRightOf="@+id/Button02" android:text="9"></Button>
</RelativeLayout>

我将如何给它一个固定的宽度？ 更新  说我有我想要的尺寸相同，彼此的整个视图（纵向）1/3几个按钮，然后我要带双宽的按钮。然后用双高度的按钮。我怎么能做到这一点其他的手工上浆他们？

How would I give it a FIXED width? UPDATE Say I have several buttons that I want the same size as each other and 1/3 of the entire view (Portrait), then I want a button with double the width. Then a button with double the height. How could I accomplish this other that manually sizing them?

推荐答案

要完成你想要的，你可以使用的LinearLayout与weightsum。例如，你可以把9. WeightSum如果你把三个按钮的权重里面各1个。他们将采取地方的1/3，你可以把2的另一个对象。这个对象将是两倍大，其他的。

To accomplish what you want, you can use a LinearLayout with a weightsum. For example, you can put a WeightSum of 9. If you put the weight of three button inside to 1 each. They will take 1/3 of the place, and you can put 2 for another object. This object will be twice as big as the other.

http://developer.android.com/reference/android/widget/LinearLayout.html#setWeightSum(float)

编辑：我想补充的是，这才能正常工作，你必须设置宽度或高度为0px（取决于如果它是一个水平或垂直布局上）

I would like to add that for this to work correctly, you have to set the width or height to 0px (depending on if it's an horizontal or a vertical layout).