这是一个示例项目,表明它有效。您可以通过查看可视化编辑器的预览来查看它的工作原理,它看起来与运行时显示的不同。我认为您的错误是您没有为加权视图设置 0px(或 0dp,零仍然为零)。
main.xml(布局):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:id="@+id/container">
<TextView android:id="@+id/textView1" android:layout_width="wrap_content"
android:layout_height="0px" android:text="TextView1"
android:layout_weight="1" android:background="#ffff0000" />
<TextView android:id="@+id/textView2" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="TextView2"
android:background="#ff00ff00" />
</LinearLayout>
测试活动.java:
public class TestActivity extends Activity
{
/** Called when the activity is first created. */
@Override
public void onCreate(final Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final TextView tv1=(TextView)findViewById(R.id.textView1);
final TextView tv2=(TextView)findViewById(R.id.textView2);
final LayoutParams layoutParams=tv1.getLayoutParams();
tv2.setLayoutParams(layoutParams);
// adding textView programatically:
final TextView tv3=new TextView(this);
tv3.setText("textView3");
tv3.setBackgroundColor(0xff0000ff);
tv3.setLayoutParams(layoutParams);
final ViewGroup root=(ViewGroup)findViewById(R.id.container);
root.addView(tv3);
}
}