问题
This is where I am stuck now. I am stuck at dynamically adding buttons to gridview.
- My gridview stars with a one button.
- When user clicks that button a context menu , pops up, asking user to enter info, once that is done. A block in the grid view is created with that info
- This is shown in the picture
I have pasted the code. I do not have clear idea on how to do it. I am assuming it will be inflating a new view and adding it to parent(layout or grid ?) view. I do not have much idea on how to code it. I have tried many things from google. I thought I could start from simple image gridview and modify it to my needs but it did not work.
Please provide some directions.
create_team_new.xml(layout where gridview resides)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="@+id/parentcreateteam"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:background="@drawable/background">
<TextView
android:id="@+id/citytextview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/city"
android:layout_alignTop="@+id/teamcity"
android:layout_alignParentLeft="true" />
<AutoCompleteTextView
android:id="@+id/teamname"
android:layout_width="244dp"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/teamcity"
android:layout_alignRight="@+id/gridviewplayer"
android:text="@string/teamname"
android:textSize="18sp" >
<requestFocus />
</AutoCompleteTextView>
<Button
android:id="@+id/createteam"
android:layout_width="140dp"
android:layout_height="wrap_content"
android:text="Create Team"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:background="@drawable/red_button"
style="@+style/button_text" />
<TextView
android:id="@+id/teamnametextview"
android:layout_width="wrap_content"
android:layout_height="22dp"
android:layout_alignBaseline="@+id/teamname"
android:layout_alignBottom="@+id/teamname"
android:layout_alignParentLeft="true"
android:text="@string/teamname" />
<AutoCompleteTextView
android:id="@+id/teamcity"
android:layout_width="244dp"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/cricket"
android:layout_alignRight="@+id/gridviewplayer"
android:layout_below="@+id/teamname"
android:layout_marginTop="22dp"
android:ems="10"
android:text="@string/city"
android:textSize="18sp" >
</AutoCompleteTextView>
<TextView
android:id="@+id/radiotextview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/teamcity"
android:layout_marginTop="15dp"
android:text="Pick a Sport" />
<GridView
android:id="@+id/gridviewplayer"
android:layout_width="match_parent"
android:layout_height="170dp"
android:layout_above="@+id/createteam"
android:layout_below="@+id/pick_sport"
android:layout_centerHorizontal="true"
android:background="@drawable/gv_bkg"
android:padding="5dp"
android:numColumns="4" >
</GridView>
<RadioGroup
android:id="@+id/pick_sport"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/createteam"
android:layout_below="@+id/radiotextview"
android:orientation="horizontal" >
<RadioButton
android:id="@+id/cricket"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Cricket" />
<RadioButton
android:id="@+id/soccer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Soccer" />
</RadioGroup>
</RelativeLayout>
gv_createplayer.xml(view to be inflated inside gridview)
<?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"
>
<Button android:id="@+id/btn_player"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text= "+"
android:background="@drawable/red_button">
</Button>
</LinearLayout>
PlayerAdapter.java(gridview Adapter)
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.GridView;
import android.widget.ImageView;
public class PlayerAdapter extends BaseAdapter {
private Context mContext;
LayoutInflater inflater;
// Keep all Images in array
public Integer[] mThumbIds = {};
/* R.drawable.gridview_createteam, R.drawable.pic2,
R.drawable.pic3, R.drawable.pic4,
R.drawable.pic5, R.drawable.pic6,
R.drawable.pic7, R.drawable.pic8,
R.drawable.pic9, R.drawable.pic10,
R.drawable.pic11, R.drawable.pic12,
R.drawable.pic13, R.drawable.pic14,
R.drawable.pic15
};
*/
// Constructor
public PlayerAdapter(Context c){
mContext = c;
}
@Override
public int getCount() {
return mThumbIds.length;
}
@Override
public Object getItem(int position) {
return mThumbIds[position];
}
@Override
public long getItemId(int position) {
return 0;
}
@SuppressWarnings("static-access")
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = new View(mContext);
view.inflate(mContext, R.layout.gv_createplayer,null);
return view;
}
}
回答1:
1) How to create a list view inside a main view, only using a half of the screen.
This is done by the weight attribute. A rough example for your sketch: The top wrapper (edittexts and buttons) has a weight of .45, the listview has a weight of .45 and the footer has a weight of .1. You can specify the weight-sum in the surrounding view; but default should be 1.
2) How to populate list view in grid manner (a row of two columns will repeat itself)
Well, with the GridView (the adapter API is the same) (:
来源：https://stackoverflow.com/questions/14591132/android-ui-add-buttons-dynamically-to-gridview