Beka Beka - 2 months ago 17
Android Question

How to change layout height programmatically in Android

I try to change RelativeLayout height programmatically. I try to explain my problem: In my

activity.xml
file, I have header layout(top position) and I also have one layout in botton position. With a click, I try to change botton position layout's height(full screen - Top layout height).

Here is
activity.xml
code:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<RelativeLayout
android:id="@+id/movies_title_layout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/headerimage" >

<ImageView
android:id="@+id/gomoviewlist"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="12dp"
android:background="@drawable/slide_menu_image" />
</RelativeLayout>

<ImageView
android:id="@+id/play_trailer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:background="@drawable/play_trailer" />

<RelativeLayout
android:id="@+id/popaplayout"
android:layout_width="fill_parent"
android:layout_height="200dp"
android:layout_alignParentBottom="true"
android:background="@drawable/movie_info_shadow" >

<TextView
android:id="@+id/movies_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="18dp"
android:layout_marginTop="14dp"
android:text="TextView"
android:textColor="#ffffff"
android:textSize="22dp" />

<TextView
android:id="@+id/category"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/movies_title"
android:layout_below="@+id/movies_title"
android:layout_marginTop="16dp"
android:text="TextView"
android:textColor="#ffffff"
android:textSize="20dp" />

<TextView
android:id="@+id/descraption"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/category"
android:layout_marginLeft="18dp"
android:layout_marginTop="5dp"
android:text="TextView"
android:textColor="#ffffff"
android:textSize="20dp" />
</RelativeLayout>




Here is Java code:

popaplayout.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
RelativeLayout.LayoutParams layout_description = new RelativeLayout.LayoutParams
(RelativeLayout.LayoutParams.FILL_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT-movies_header_layout.getWidth() );

popaplayout.setLayoutParams(layout_description);

}
});


popaplayout is the layout witch I try to change it's height.

How can I solve my problem?

Answer

Add this to your onClickListener:

((RelativeLayout.LayoutParams)popaplayout.getLayoutParams()).addRule(RelativeLayout.BELOW, R.id.movies_title_layout);

This will make the view's top the same as the header's bottom

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