I have read probably all posts and documentation but I still can't solve this issue.
I want to use addView()
method to add view to the existing (running) layout but for some reason I cant. I know that this should be easy and basic but still I cant do it. So, please help me.
Here is a code:
LinearLayout layout = (LinearLayout)findViewById(R.id.mainLayout);
TextView text = new TextView(this);
text.setText("test");
layout.addView(text);
That's a code, and the result is that I have displayed only views which are defined in XML file. There is no this new view I have added. When I debug I see this added view as a child of the parent to which I have added it but it isn't displayed.
here is main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:id="@+id/mainLayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="@drawable/main1" >
<TextView android:id="@+id/app_title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#FFF"
android:text="@string/app_title"
android:textSize="25dp"
android:gravity="center_horizontal"/>
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:text="@string/main_screen_counter_title"
android:textSize="15dp"
android:textColor="#FFF"
android:gravity="center_horizontal"/>
<TextView android:id="@+id/frontScreenCounter"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#FFF"
android:text="@string/reading"
android:textSize="33dp"
android:gravity="center_horizontal" />
<GridView android:id="@+id/gridview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="90dp"
android:numColumns="3"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:gravity="center"
android:textColor="#888"
/>
</LinearLayout>
Please help. This will driving me nuts!
You forgot to specify the LayoutParameters
for the newly added view.
LinearLayout layout = (LinearLayout)findViewById(R.id.mainLayout);
TextView text=new TextView(this);
text.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
text.setText("test");
layout.addView(text);
EDIT
The GridView
with an id of @+id/gridview
is defined with a layout height of fill_parent
, leaving you with no space to add a new view. Changing its height to wrap_content
may solve your problem.
Adding my comment to this post to help others easily verify the solution.