我在gridview上遇到一个clickListener问题. LongClickListener无问题.但是我似乎没有从点击侦听器得到任何响应.
我的代码如下
我很困惑为什么长的点击工作,但不是正常的点击,
任何指针都将不胜感激
谢谢
final GridView gridView = (GridView) findViewById(R.id.grid_view);
gridView.setNumColumns(numOfColumns);
gridView.getLayoutParams().width = (CELL_WIDTH * numOfColumns);
gridView.getLayoutParams().height = (CELL_WIDTH * numOfRows);
....
gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent,View v,int position,long id) {
Log.d("ABCD","Position Single Click is " + position);
// Ideally in here I want to put to open a soft keyboard for the user to enter a value
// InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
// imm.showSoftInput(gridView,InputMethodManager.SHOW_IMPLICIT);
}
});
gridView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent,View view,long id) {
Log.d("ABCD","Position Long Click is " + position);
return true;
}
});
grid_view是
<LinearLayout 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"
android:descendantFocusability="blocksDescendants"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="center"
android:orientation="horizontal">
<View
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2"/>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/my_grid_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"/> <<--- I WANT THIS TO GET THE CLICK
<View
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2"/>
</LinearLayout>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/listId"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="0dp" />
</LinearLayout>
GridCell在网格视图中是
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:padding="0dp" android:layout_margin="0dp"
android:focusable="false"
android:clickable="false"
android:focusableInTouchMode="false"
>
<TextView
android:id="@+id/grid_item_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="1dp"
android:paddingRight="0dp"
android:paddingTop="0dp"
android:paddingBottom="0dp"
android:textSize="10px"
android:focusable="false"
android:clickable="false"
android:focusableInTouchMode="false"
>
</TextView>
<EditText xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/grid_item_label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@+id/celllabel"
android:background="@android:color/transparent"
android:paddingLeft="5dp"
android:paddingRight="0dp"
android:paddingTop="0dp"
android:paddingBottom="0dp"
android:layout_margin="0dp"
android:focusable="false"
android:focusableInTouchMode="false"
android:clickable="false"
android:cursorVisible="false">
</EditText>
</RelativeLayout>
适配器类有一个getView,如下所示
public View getView(final int position,View convertView,ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
MyObject obj = myObjects.get(position);
if (convertView == null) {
gridView = inflater.inflate(R.layout.grid_cell,null);
String textColour = "#000000";
TextView textView = (TextView) gridView.findViewById(R.id.grid_item_label);
textView.setText(Html.fromHtml(String.format("<font color='%s'>%s</font>",textColour,obj.getValue())));
TextView superScriptTv = (TextView) gridView.findViewById(R.id.grid_item_number);
if (obj.getNumber() > 0) {
superScriptTv.setText(Html.fromHtml(String.format("<font>%s</font>",cell.getNumber())));
}
} else {
gridView = convertView;
}
gridView.setBackgroundColor(obj.getBackgroundColour());
return gridView;
}
编辑
现在真的把我的头撞在墙上:)
我更新代码示例,所以有更多的数据.我注意到在我的适配器,如果我不设置文本在textview与ID = R.id.grid_item_number然后它的工作.一旦我设置文本,那么我失去了点击监听器.
链接的问题/答案没有帮助我看到.任何人都可以帮助我的愚蠢吗？
提前致谢.
解决方法
问题在于row_cell中的EditText.当您点击该项目时,它会聚焦,并防止整个项目再次点击.你注意到,只有长时间点击的作品.
Here you have a similar problem.
Here you have a similar problem.
为了解决这个问题,我将把OnItemClickListeners从Activity / Fragment移动到GridViewAdapter中,而不是：
gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent,long id) {
Log.d("ABCD","Position Single Click is " + position);
// Ideally in here I want to put to open a soft keyboard for the user to enter a value
// InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
// imm.showSoftInput(gridView,InputMethodManager.SHOW_IMPLICIT);
}
});
gridView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent,long id) {
Log.d("ABCD","Position Long Click is " + position);
return true;
}
});
我会做这样的事情：
@Override
public View getView(int position,ViewGroup parent) {
LayoutInflater layoutInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridViewItem;
if (convertView == null) {
gridViewItem = new View(mContext);
gridViewItem = layoutInflater.inflate(R.layout.grid_cell,null);
TextView textView = (TextView)gridViewItem.findViewById(R.id.grid_item_number);
textView.setText(mValues[position]);
EditText editText = (EditText)gridViewItem.findViewById(R.id.grid_item_label);
} else {
gridViewItem = (View) convertView;
}
gridViewItem.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.e("GRID","onClick: " );
}
});
gridViewItem.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
Log.e("GRID","onLongClick: " );
return true;
}
});
return gridViewItem;
}
这将阻止你现在正在努力的这种奇怪的行为.
为了这个例子,请在下面找到我的代码：
MainActivity布局：
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="io.github.mmbs.gridviewcheck.MainActivity"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="0dp">
<GridView
android:id="@+id/gridView"
android:numColumns="auto_fit"
android:columnWidth="100dp"
android:stretchMode="columnWidth"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true">
</GridView>
</android.support.constraint.ConstraintLayout>
网格单元布局：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:clickable="false"
android:focusable="false"
android:focusableInTouchMode="false"
android:padding="8dp">
<TextView
android:id="@+id/grid_item_number"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="0dp"
android:paddingLeft="1dp"
android:paddingRight="0dp"
android:paddingTop="0dp"
android:textSize="20sp"
android:text="TEXTVIEW">
</TextView>
<EditText
android:id="@+id/grid_item_label"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:background="@android:color/transparent"
android:cursorVisible="false"
android:layout_below="@id/grid_item_number"
android:text="EDITTEXT">
</EditText>
</RelativeLayout>
MyGridAdapter：
public class MyGridViewAdapter extends BaseAdapter {
private Context mContext;
private final String[] mValues;
public MyGridViewAdapter(String[] values,Context context) {
mValues = values;
mContext = context;
}
@Override
public int getCount() {
return mValues.length;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position,"onLongClick: " );
return true;
}
});
return gridViewItem;
}
}
如果你喜欢,我也可以在github上分享这个代码,所以你将有一个完全可操作的例子.
第二个选择是将您的实现保留为原样,并在EditText可对焦并启用时执行hacks操作.这里有相关主题：
> Android: Force EditText to remove focus?
> ListView items focus behaviour
> Focusable EditText inside ListView
> Android: Force EditText to remove focus?
此外,请考虑that answer:
Do not use clickable objects in the grid. In that case Android cannot handle the click event of GridView.
Instead,use something to show a similar user interface view. Then handle that object’s click actions.
Don’t: put Button in the GridView to perform some click actions.
Do: put an ImageView instead of ImageButton and handle ImageView’s click events.
