我正在应用程序中使用gridview。我希望当我点击这个项目时,它会替换另一个数组图片。实际上我在应用程序第一次运行时使用了两个数组,gridview将显示第一个数组图片,然后当我单击项目时,它将根据其位置被第二个数组图片替换。
我试过了,但没有解决。所以谁能帮帮我。。
gridviewcontent.java文件
public class GridViewContent extends BaseAdapter {
private Context context;
public int pictureArray[]={
R.drawable.question,
R.drawable.question,
R.drawable.question,
R.drawable.question,
R.drawable.question,
R.drawable.question,
R.drawable.question,
R.drawable.question,
};
public GridViewContent(Context c){
context=c;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return (pictureArray.length);
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return pictureArray[position];
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View arg1, ViewGroup arg2) {
// TODO Auto-generated method stub
ImageView myimage=new ImageView(context);
myimage.setImageResource(pictureArray[position]);
myimage.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
myimage.setLayoutParams(new GridView.LayoutParams(70, 70));
return myimage;
}
}
主活动.java
public class MainActivity extends Activity {
Context ctx;
GridViewContent grid1 = new GridViewContent(ctx);
// GridView grid;
/*
* static final int[] numbers = new int[] {
* R.drawable.question,R.drawable.question
* ,R.drawable.question,R.drawable.question
* ,R.drawable.question,R.drawable.question, R.drawable.question,
*
* };
*/
public int OriginalArray[] = { R.drawable.sample_0, R.drawable.sample_1,
R.drawable.sample_2, R.drawable.sample_3, R.drawable.sample_4,
R.drawable.sample_5, R.drawable.sample_6, R.drawable.sample_7, };
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final GridView grid = (GridView) findViewById(R.id.gv_memory);
grid.setAdapter(new GridViewContent(this));
// grid.setOnItemClickListener(itemClickListener);
grid.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
int id = v.getId();
ImageView pictImage = new ImageView(ctx);
int imgView = OriginalArray[id];
pictImage.setImageResource(imgView);
}
});
}
}
main.xml文件
<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/gv_memory"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="90dp"
android:gravity="center"
android:horizontalSpacing="10dp"
android:numColumns="auto_fit"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp" >
</GridView>
提前谢谢。。。。
2条答案
按热度按时间4si2a6ki1#
您需要做一些小的更改,如下所示:
cbjzeqam2#
为gridview实现onitemclicklistener。请参阅此网站http://www.mkyong.com/android/android-gridview-example/. 将您的更改逻辑写入其中并调用adapter.notifydatasetchanged()。http://stackoverflow.com/questions/6201884/how-can-i-change-image-on-gridview-runtime