TestGrid Adnroid
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2022-03-09 21:57:14
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package com.atest ;
import java.util .ArrayList ;
import android.app .Activity ;
import android.os .Bundle ;
import android.view .View ;
import android.view .View .OnClickListener ;
import android.widget .ArrayAdapter ;
import android.widget .Button ;
import android.widget .GridView ;
import android.widget .LinearLayout ;
import android.widget .LinearLayout .LayoutParams ;
public class TestGrid extends Activity implements OnClickListener {
protected ArrayList<String> nums = new ArrayList<String>( 3 ) ;
protected GridView listHands = null ;
/** Called when the activity is first created. */
@Override
public void onCreate( Bundle icicle) {
super .onCreate ( icicle) ;
for ( int x=0 ; x < 3 ; x++) {
nums.add ( "0" ) ;
}
setContentView( R.layout .gridview ) ;
LinearLayout numbers = ( LinearLayout) findViewById( R.id .grid ) ;
// Set width, height (-1=fill parent), weight
LayoutParams params = new LinearLayout.LayoutParams (
LinearLayout.LayoutParams .WRAP_CONTENT , 30 , 1 ) ;
this .listHands = new GridView( this ) ;
listHands.setId ( 222 ) ;
listHands.setNumColumns ( 3 ) ;
listHands.setLayoutParams ( params) ;
listHands.setAdapter ( new ArrayAdapter<String>( this ,
android.R .layout .simple_list_item_1_small , this .nums ) ) ;
numbers.addView ( listHands) ;
( ( Button ) findViewById( R.id .subBtn ) ) .setOnClickListener ( this ) ;
}
/**
* update the list after every SUBMIT click
*/
public void onClick( View arg0) {
// update the list
long t = System .currentTimeMillis ( ) ;
for ( int x=0 ; x < 3 ; x++) {
this .nums .set ( x, String .valueOf ( t + x) ) ;
}
this .listHands .invalidate ( ) ;
}
}
Here's the XML for the screen
XML: |
<?xml version ="1.0" encoding ="utf-8" ?> <RelativeLayout id ="@+id/widget24" android:layout_width ="fill_parent" android:layout_height ="fill_parent" android:background ="#ffffffff" xmlns:android ="http://schemas.android.com/apk/res/android" > <LinearLayout id ="@+id/grid" android:layout_width ="wrap_content" android:layout_height ="50px" android:orientation ="vertical" android:scrollbars ="vertical" /> <Button id ="@+id/subBtn" android:layout_width ="wrap_content" android:layout_height ="wrap_content" android:text ="SUBMIT" android:textSize ="12sp" android:layout_below ="@+id/grid" > </Button> </RelativeLayout> |
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