按钮边距的布局问题 [英] Layout problem with button margin

问题描述

我在 android 应用程序中组织布局时遇到问题.我正在动态创建按钮并使用此代码将它们添加到我的布局中:

I have problem with organizing layout in android aplication. I'm dynamically creating buttons and adding them with this code to my layout:

    LayoutInflater layoutInflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    for (int i = 0; i < NO_NUMBERS; i++){

        Button btn = new Button(this);
        btn = (Button) layoutInflater.inflate(R.layout.button, null);
        btn.setId(2000+i);
        Integer randomNumber = sort.getNumbersCopy()[i];
        btn.setText(randomNumber.toString());
        btn.setOnClickListener((OnClickListener) this);
        buttonList.addView(btn);
        list.add(btn);
    }

我将它添加到 LinearLayout:

I'm adding it to the LinearLayout:

<LinearLayout
    android:id="@+id/buttonlist"
    android:layout_alignParentLeft="true"
    android:layout_marginTop="185dp"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="5dp"
    android:orientation="horizontal"
    android:gravity="center_horizontal"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">

</LinearLayout>

我正在导入这个 .xml，我在其中定义按钮布局:

and i'm importing this .xml where i'm defining button layout:

<Button xmlns:android="http://schemas.android.com/apk/res/android"
android:textSize="26dp"
android:textStyle ="bold"
android:textColor="#ffffff"
android:background="@drawable/button"
android:layout_marginLeft="8px"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"/>

好吧，布局总是这样结束:

Well, layout always ends up like this:

而不是这样的(甚至按钮之间的空间，方形按钮):

Instead of something like this (even spce between buttons, square buttons):

总结一下:我必须:

• 描述xml中的按钮
• 动态生成N个按钮
• 将描述按钮的属性添加到动态创建的按钮中
• 组织布局，使其可以在 buttonList 中均匀分布按钮，并在 tham 之间留有空格

推荐答案

记住，android:layout_* 属性是 LayoutParams.它们是父级的参数，会影响父级在该视图上执行布局的方式.您正在按钮上指定 layout_margin 属性，但它们被忽略了.原因如下:

Remember, android:layout_* attributes are LayoutParams. They are arguments to the parent and affect how the parent will perform layout on that view. You're specifying layout_margin attributes on your buttons, but they're getting ignored. Here's why:

由于 LayoutParams 特定于父视图类型，因此在使用 LayoutInflater 或其他 扩展布局时，您需要提供正确父类型的实例布局中顶层视图的 layout_ 属性将被删除.(inflater 不知道要生成什么类型​​的 LayoutParams.)

Since LayoutParams are specific to the parent view type, you need to supply an instance of the correct parent type when you inflate layouts using a LayoutInflater or else layout_ attributes on the top-level view in the layout will be dropped. (The inflater would have no idea what type of LayoutParams to generate.)

由于 buttonList 是按钮视图的预期父级，请将 inflate 行更改为:

Since buttonList is your intended parent for the button views, change your inflate line to this:

btn = (Button) layoutInflater.inflate(R.layout.button, buttonList, false);

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