[英]Gridview onclick listener its not working
我正在使用布局的網格視圖,在列表中的網格視圖項之后不起作用,它在logcat錯誤中顯示“ throwIndexOutOfBoundsException”。如果我使用吐司功能,則沒有onclick函數;如果我為下一個活動提供了onlcick函數,則它不起作用
Gridviewadapter.java
public class GridviewAdapter extends BaseAdapter
{
private ArrayList<String> listginfy;
private ArrayList<Integer> listimage;
private Activity activity;
public GridviewAdapter(GinfyActivity ginfyActivity,ArrayList<String> listginfy, ArrayList<Integer> listimage) {
super();
this.listginfy = listginfy;
this.listimage = listimage;
this.activity = (Activity) ginfyActivity;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return listginfy.size();
}
@Override
public String getItem(int position) {
// TODO Auto-generated method stub
return listginfy.get(position);
}
public int getItemId() {
// TODO Auto-generated method stub
return 0;
}
public static class ViewHolder
{
public ImageView imgViewGinfy;
public TextView txtViewTitle;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder view;
LayoutInflater inflator = activity.getLayoutInflater();
if(convertView==null)
{
view = new ViewHolder();
convertView = inflator.inflate(R.layout.gridview_row, null);
view.txtViewTitle = (TextView) convertView.findViewById(R.id.textView1);
view.imgViewGinfy = (ImageView) convertView.findViewById(R.id.imageView1);
convertView.setTag(view);
}
else
{
view = (ViewHolder) convertView.getTag();
}
view.txtViewTitle.setText(listginfy.get(position));
view.imgViewGinfy.setImageResource(listimage.get(position));
return convertView;
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
}
Mainactivity.java
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.home_ginfy);
prepareList();
// prepared arraylist and passed it to the Adapter class
mAdapter = new GridviewAdapter(this,listginfy, listimage);
// Set custom adapter to gridview
gridView = (GridView) findViewById(R.id.gridView1);
gridView.setAdapter(mAdapter);
// Implement On Item click listener
gridView.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> a, View v, int position, long id) {
mAdapter = results.get(position);
switch(mAdapter.getItemId())
{
case 1:
Intent newActivity = new Intent(GinfyActivity.this,MainActivity.class);
startActivity(newActivity);
break;
case 2:
Intent new1Activity = new Intent(GinfyActivity.this,AndroidTabLayoutActivity.class);
startActivity(new1Activity);
break;
default:
Toast.makeText(GinfyActivity.this, "Wrong Input", Toast.LENGTH_LONG).show();
}
}
});
}
public void prepareList()
{
listginfy = new ArrayList<String>();
listginfy.add("Prayers");
listginfy.add("Poojaroom");
listimage = new ArrayList<Integer>();
listimage.add(R.drawable.ginfyprayer);
listimage.add(R.drawable.poojaroom1);
}
}
gridview的onclick功能在這里不起作用,我也發布了xml布局。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="@+id/relativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:background="@drawable/border"
android:padding="5dp">
<ImageView
android:layout_height="64dp"
android:id="@+id/imageView1"
android:layout_width="64dp"
android:src="@drawable/icon"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:clickable="True">
</ImageView>
<TextView
android:text="TextView"
android:layout_height="wrap_content"
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_below="@+id/imageView1"
android:layout_marginTop="2dp"
android:layout_centerHorizontal="true"
android:textSize="18sp"
android:ellipsize="marquee"></TextView>
</RelativeLayout>
home_ginfy.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<GridView
android:layout_height="wrap_content"
android:id="@+id/gridView1"
android:layout_width="match_parent"
android:numColumns="auto_fit"
android:horizontalSpacing="10dp"
android:verticalSpacing="10dp"
android:clickable="True">
</GridView>
</LinearLayout>
您的代碼中有很多錯誤。.(例如布局中的android:clickable="True"
>>刪除該錯誤)
僅用於測試,將代碼替換為:
// Implement On Item click listener
gridView.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> a, View v, int position, long id) {
switch(position)
{
case 1:
Intent newActivity = new Intent(GinfyActivity.this,MainActivity.class);
startActivity(newActivity);
break;
case 2:
Intent new1Activity = new Intent(GinfyActivity.this,AndroidTabLayoutActivity.class);
startActivity(new1Activity);
break;
default:
Toast.makeText(GinfyActivity.this, "Wrong Input", Toast.LENGTH_LONG).show();
}
}
});
適配器的getItemId始終返回0。
更換
mAdapter = results.get(position);
switch(mAdapter.getItemId())
通過
switch(position)
我一直在使用這樣的東西。 在您的情況下,這應該可行。
public class GridviewAdapter extends BaseAdapter
{
private ArrayList<String> listginfy;
private ArrayList<Integer> listimage;
private Activity activity;
public GridviewAdapter(GinfyActivity ginfyActivity,ArrayList<String> listginfy, ArrayList<Integer> listimage) {
super();
this.listginfy = listginfy;
this.listimage = listimage;
this.activity = (Activity) ginfyActivity;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return listginfy.size();
}
@Override
public String getItem(int position) {
// TODO Auto-generated method stub
return listginfy.get(position);
}
public int getItemId() {
// TODO Auto-generated method stub
return 0;
}
public static class ViewHolder
{
public ImageView imgViewGinfy;
public TextView txtViewTitle;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder view;
LayoutInflater inflator = activity.getLayoutInflater();
if(convertView==null)
{
view = new ViewHolder();
convertView = inflator.inflate(R.layout.gridview_row, null);
view.txtViewTitle = (TextView) convertView.findViewById(R.id.textView1);
view.imgViewGinfy = (ImageView) convertView.findViewById(R.id.imageView1);
convertView.setTag(view);
convertView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (position){
case 1:
Intent newActivity = new Intent(GinfyActivity.this,MainActivity.class);
startActivity(newActivity);
break;
case 2:
Intent new1Activity = new Intent(GinfyActivity.this,AndroidTabLayoutActivity.class);
startActivity(new1Activity);
break;
default:
Toast.makeText(GinfyActivity.this, "Wrong Input", Toast.LENGTH_LONG).show();
}
}
}
}
else
{
view = (ViewHolder) convertView.getTag();
}
view.txtViewTitle.setText(listginfy.get(position));
view.imgViewGinfy.setImageResource(listimage.get(position));
return convertView;
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
}
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