我正在尝试在我的opengl视图上添加由xml定义的新LinearLayout。
我使用纯java:
public class VortexView extends GLSurfaceView {
public boolean onTouchEvent(final MotionEvent event) {
show_something();
}
void show_something()
{
//context is the main activity object that gets passed into this
LinearLayout ll = new LinearLayout(context);
b = new Button(context);
b.setText("hello world 1");
ll.addView(b);
ll.setGravity(Gravity.CENTER_HORIZONTAL | Gravity.CENTER_VERTICAL);
context.addContentView(ll, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
}
}
但是我希望能够做到这一点:
LinearLayout ll = (LinearLayout)findViewById(R.layout.main);
context.addContentView(ll, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
我的xml是:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:text="kill"
/>
</LinearLayout>
每次我这样做虽然应用程序崩溃了。有什么想法吗?
答案 0 :(得分:1)
你可以试试以下:
LayoutInflater inflater = getLayoutInflater();
getWindow().addContentView(inflater.inflate(R.layout.main, null), new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
这应该有用......
答案 1 :(得分:1)
你有可能在那里弄得一团糟吗?
让我们以不同的方式尝试,在后台创建GLSurfaceView
,并在其上添加LinearLayout
。
main.xml文件:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/relativeLayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<path.to.vortex.VortexView
android:id="@+id/vortexView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
</path.to.vortex.VortexView>
<LinearLayout
android:id="@+id/linearLayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</LinearLayout>
</RelativeLayout>
在VortexView
类中添加构造函数和初始化
public class VortexView extends GLSurfaceView {
public VortexView (Context context)
{
super(context);
init(context);
}
public VortexView (Context context, AttributeSet atts)
{
super(context, atts);
init(context);
}
public VortexView (Context context, AttributeSet atts, int defStyle)
{
super(context, atts, defStyle);
init(context);
}
public void init(context)
{
//do whatever you need to init your view here...
}
}
在您的活动中,您需要在main.xml上setContentView()
:
public class VortexActivity extends Activity
{
Context mContext;
VortexView mVortexView;
RelativeLayout relativeLayout;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
mContext = getApplicationContext();
setContentView(R.layout.main);
mVortexView = (VortexView) findViewById(R.id.vortexView);
mRelativeLayout = (RelativeLayout) findViewById(R.id.relativeLayout);
}
}
现在您可以随意使用布局执行任何操作,并且由于VortexView
在LinearLayout
之前在xml中声明,因此它将位于其背景中。