如何让 Android TableLayout 填满屏幕? [英] How can I get an Android TableLayout to fill the screen?

问题描述

我正在与 Android 糟糕的布局系统作斗争.我想找一张桌子来填满整个屏幕(很简单吧?)，但这太难了.

I'm battling with Android's awful layout system. I'm trying to get a table to fill the screen (simple right?) but it's ridiculously hard.

我让它以某种方式在 XML 中工作，如下所示:

I got it to work somehow in XML like this:

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

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="fill_parent" android:layout_width="fill_parent">
<TableRow android:layout_height="fill_parent" android:layout_width="fill_parent" android:layout_weight="1">
<Button android:text="A" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_weight="1"/>
<Button android:text="B" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_weight="1"/>
</TableRow>
<TableRow android:layout_height="fill_parent" android:layout_width="fill_parent" android:layout_weight="1">
<Button android:text="C" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_weight="1"/>
<Button android:text="D" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_weight="1"/>
</TableRow>

但是我无法让它在 Java 中工作.我已经尝试了 LayoutParams 的一百万个组合，但没有任何效果.这是我最好的结果，它只填充了屏幕的宽度，而不是高度:

However I can not get it to work in Java. I've tried a million combinations of the LayoutParams, but nothing ever works. This is the best result I have which only fills the width of the screen, not the height:

    table = new TableLayout(this);
    // Java. You suck.
    TableLayout.LayoutParams lp = new TableLayout.LayoutParams(
                                    ViewGroup.LayoutParams.FILL_PARENT,
                                    ViewGroup.LayoutParams.FILL_PARENT);
    table.setLayoutParams(lp); // This line has no effect! WHYYYY?!
    table.setStretchAllColumns(true);
    for (int r = 0; r < 2; ++r)
    {
        TableRow row = new TableRow(this);
        for (int c = 0; c < 2; ++c)
        {
            Button btn = new Button(this);
            btn.setText("A");
            row.addView(btn);
        }
        table.addView(row);
    }

显然 Android 文档没有帮助.有人有什么想法吗?

Obviously the Android documentation is no help. Anyone have any ideas?

推荐答案

终于想出了如何做到这一点.放弃了 TableLayout 而只是在垂直布局中使用了水平的 LinearLayouts.关键是设置权重.如果您指定 FILL_PARENT 但使用默认权重，则不起作用:

Finally worked out how to do this. Gave up on TableLayout and just used horizontal LinearLayouts inside a vertical one. The critical key is to set the weight. If you specify FILL_PARENT but with the default weight, it doesn't work:

LinearLayout buttonsView = new LinearLayout(this);
buttonsView.setOrientation(LinearLayout.VERTICAL);
for (int r = 0; r < 6; ++r)
{
    LinearLayout row = new LinearLayout(this);
    row.setOrientation(LinearLayout.HORIZONTAL);
    for (int c = 0; c < 4; ++c)
    {
        Button btn = new Button(this);
        btn.setText("A");
        LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT);
        lp.weight = 1.0f;
        row.addView(btn, lp);
    }
    LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT);
    lp.weight = 1.0f;
    buttonsView.addView(row, lp);
}  

ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT);
setContentView(buttonsView, lp);

这篇关于如何让 Android TableLayout 填满屏幕?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！