通过code创建布局 [英] create layout through code

问题描述

我通过code创建布局，这样我可以使用下面code加上该布局的多个视图。

I created layout through code so that i can add multiple views on that layout using code below.

public class AndroidPrepChart extends Activity {

    GraphicalView gView;
    GraphicalView gView2;
    GraphicalView gView3;

    BarChart barChart = new BarChart();
    BarChart2 barChart2 = new BarChart2();
    BarChart3 barChart3 = new BarChart3();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        gView = barChart.execute2(this);
        gView2 = barChart2.execute2(this);
        gView3 = barChart3.execute2(this);

        LinearLayout layout = new LinearLayout(this);

        layout.addView(gView, 150, 200);
        layout.addView(gView2, 150, 200);
        layout.addView(gView3, 150, 150);

        setContentView(layout);

     }
}

下面的输出屏幕包含三个图表，但我想在第二行定位第三张图表。请帮我解决这个问题。我初学Android系统。

Here output screen contains three charts but i want to position third chart in the second line. Please help me to solve this problem. I am beginner in Android.

推荐答案

您可以通过嵌套多个的LinearLayout 和改变方向属性实现这个

You can achieve this by nesting multiple LinearLayouts and changing the orientation property

在XML中，这将是这个样子（只显示相关的元素和属性）：

in XML this would look something like this (showing only the relevant elements and attributes):

<LinearLayout android:orientation="vertical">
    <LinearLayout android:orientation="horizontal">
        <!-- Your first 2 graphs go in this LinearLayour -->
    </LinearLayout>

    <LinearLayout android:orientation="horizontal">
        <!-- The third graph goes in here -->
    </LinearLayout>
</LinearLayout>

您可以通过编程方式使用<一个操纵的LinearLayout 的方向href=\"http://developer.android.com/reference/android/widget/LinearLayout.html#setOrientation%28int%29\"相对=nofollow> setOrientation方法。例如：

You can programmatically manipulate the orientation of the LinearLayout by using the setOrientation method. E.g:

LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);

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