Android动态RelativeLayout

Question

我的 layout.xml 文件如下所示:

<ScrollView
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/scrollView1"
        android:layout_width="fill_parent"
        android:layout_height="270dp"
        android:layout_weight="0.47" >

        <LinearLayout
            android:id="@+id/linearLayout2"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical" >
        </LinearLayout>

    </ScrollView>

我使用以下代码在 for 循环中创建 TextView 和 Button:

  View linearLayout =  findViewById(R.id.linearLayout2);


for (int i=0 ; i<10; i++){
     TextView textview = new TextView(this);
     textview.setText("Text view" + i);
     textview.setId(i);

     textview.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
     ((LinearLayout) linearLayout).addView(textview);


    Button button = new Button(this);
    button.setText("View");
    button.setId(i);
    int width=90;
    int height=60;
    button.setLayoutParams(new LayoutParams(width, height));
    ((LinearLayout) linearLayout).addView(button);

}

我在 TextView 下方获取了 Button。任何人都可以帮我用 RelativeLayout 替换这个 LinearLayout 这样我就可以并排获得 TextView 和 Button ？

Answer 1

修改您的布局，使您拥有 RelativeLayout 而不是 LinearLayout:

<ScrollView
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/scrollView1"
        android:layout_width="fill_parent"
        android:layout_height="270dp"
        android:layout_weight="0.47" >

        <RelativeLayout
            android:id="@+id/relativeLayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            >
        </RelativeLayout>

</ScrollView>

然后尝试使 TextView 和 Button 位于同一行:

    RelativeLayout rl = (RelativeLayout) findViewById(R.id.relativeLayout);
    for (int i = 0; i < 10; i++) {
        Button button = new Button(this);
        button.setText("View" + i);
        button.setId(1000 + i);
        int width = 90;
        int height = 60;

        TextView textview = new TextView(this);
        textview.setText("Text view" + i);
        textview.setId(2000 + i);

        if (i == 0) {
            RelativeLayout.LayoutParams rlp2 = new RelativeLayout.LayoutParams(
                    RelativeLayout.LayoutParams.FILL_PARENT,
                    RelativeLayout.LayoutParams.WRAP_CONTENT);
            rlp2.addRule(RelativeLayout.ALIGN_PARENT_TOP);
            rlp2.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
            textview.setLayoutParams(rlp2);
            rl.addView(textview);
            RelativeLayout.LayoutParams rlp1 = new RelativeLayout.LayoutParams(
                    width, height);
            rlp1.addRule(RelativeLayout.ALIGN_PARENT_TOP);
            rlp1.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
            button.setLayoutParams(rlp1);
            rl.addView(button);
        } else {
            RelativeLayout.LayoutParams rlp2 = new RelativeLayout.LayoutParams(
                    RelativeLayout.LayoutParams.FILL_PARENT,
                    RelativeLayout.LayoutParams.WRAP_CONTENT);
            rlp2.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
            rlp2.addRule(RelativeLayout.BELOW, button.getId() - 1);
            textview.setLayoutParams(rlp2);
            rl.addView(textview);
            RelativeLayout.LayoutParams rlp1 = new RelativeLayout.LayoutParams(
                    width, height);
            rlp1.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
            rlp1.addRule(RelativeLayout.BELOW, button.getId() - 1);
            button.setLayoutParams(rlp1);
            rl.addView(button);
        }
    }