我希望用户从alertDialog中的编辑文本输入文本,并让列表视图中的文本视图更新为该输入。它似乎只工作,如果我没有输入任何东西到编辑文本,它将textView更改为空白,但如果有输入什么也没有发生,奇怪。无法将自定义列表视图中的TextView更改为alertDialog中editText的用户输入
这是适配器类,我的工作在 -
import android.content.Context;
import android.content.DialogInterface;
import android.support.annotation.NonNull;
import android.support.v7.app.AlertDialog;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.ArrayList;
import static com.example.emilythacker.chorelist.R.id.textView_ID;
class CustomAdapter extends ArrayAdapter{
public CustomAdapter(Context context, ArrayList choreText) {
super(context, R.layout.custon_listview_row, choreText);
}
@NonNull
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater myInflater = LayoutInflater.from(getContext());
View customView = myInflater.inflate(R.layout.custon_listview_row, parent, false);
ImageButton imageButton = (ImageButton) customView.findViewById(R.id.imageButton_ID);
final TextView textView = (TextView) customView.findViewById(textView_ID);
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//what happens when textView is clicked
AlertDialog alertDialog = new AlertDialog.Builder(getContext()).create();
final EditText input = new EditText(getContext());
input.setHint("hint");
alertDialog.setView(input);
alertDialog.setTitle("Set Chore");
alertDialog.setMessage("Alert message to be shown");
alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, "OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
//this will set text to "hello" only if user does not enter anything into input
textView.setText("hello");
//this also will only work if there is no input entered into input...wich will change textView into empty space
//textView.setText(input.getText().toString());
//works the same with or without dialog.dismiss();
dialog.dismiss();
}
});
alertDialog.show();
}
});
imageButton.setImageResource(R.drawable.clock);
return customView;
}
}
这里是我的列表视图中的每一行的XML如果helps-
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="60dp">
<ImageButton
android:layout_width="60dp"
android:scaleType="fitCenter"
app:srcCompat="@drawable/clock"
android:id="@+id/imageButton_ID"
android:layout_height="60dp"
android:background="@null"
android:layout_alignParentRight="true"
android:padding="5dp"
android:layout_weight="1" />
<TextView
android:text="Click here to add chore"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:id="@+id/textView_ID"
android:textSize="25dp"
android:layout_centerVertical="true"
android:layout_toStartOf="@+id/imageButton_ID"
android:layout_marginEnd="11dp"
/>
</RelativeLayout>
它的工作原理!长期以来一直困扰着这个。谢谢 –