0
ändern
Ich habe einen alertDialog und wenn der Benutzer die Done-Taste auf der Tastatur gedrückt wird, möchte ich die setText() -Methode verwenden, um die TextView in der ListView zu ändern. Ich kann setText() -Methode scheinbar überall verwenden, aber in der Done-Taste bei Klick-Methode, obwohl ein Toast von Done-Taste auf Klick funktioniert. Der fehlerhafte Code befindet sich in der ArrayAdapter-Klasse. Dies ist alles mein Code und die Log-Cat-Nachrichten, wenn ich den Done-Button drücke.Willst du TextView auf Knopfdruck von der weichen Tastatur
MainActivity.java
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.app.Activity;
import android.view.KeyEvent;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ViewSwitcher;
import java.util.ArrayList;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final ArrayList<String> Chores = new ArrayList<>();
Chores.add("");
//final String[] Chores = {"", "", ""};
final ListAdapter MyAdapter = new CustomAdapter(this, Chores);
ListView listViewObject = (ListView)findViewById(R.id.customListView_ID);
listViewObject.setAdapter(MyAdapter);
listViewObject.setOnItemClickListener(
new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id){
String ChoreString = String.valueOf(parent.getItemAtPosition(position));
}
}
);
final Button button = (Button) findViewById(R.id.button_ID);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Chores.add("");
((ArrayAdapter)MyAdapter).notifyDataSetChanged();
}
});
}
}
CustomAdapter.java
import android.content.Context;
import android.os.Handler;
import android.os.Looper;
import android.support.annotation.NonNull;
import android.support.v7.app.AlertDialog;
import android.text.InputType;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.EditorInfo;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
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(R.id.textView_ID);
final EditText input = new EditText(getContext());
final AlertDialog OptionDialog = new AlertDialog.Builder(getContext()).create();
//makes textView clickable
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//what happens when textView is clicked
//final AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
// put aler dialog box logic here
OptionDialog.setTitle("Enter new chore");
OptionDialog.setView(input);
input.setInputType(InputType.TYPE_CLASS_TEXT);
input.setImeOptions(EditorInfo.IME_ACTION_DONE);
//checks if "Done" button on soft keyboard is clicked
input.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if(actionId==EditorInfo.IME_ACTION_DONE){
//what happens when "Done" is clicked
//textView wont change to string hello
textView.post(new Runnable() {
@Override
public void run() {
// your stuff to update the UI
textView.setText("hello");
}
});
//this toast works
// Toast.makeText(getContext(), "this is my Toast message!!! =)",
// Toast.LENGTH_LONG).show();
OptionDialog.dismiss();
}
return false;
}
});
OptionDialog.show();
}
});
imageButton.setImageResource(R.drawable.clock);
return customView;
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.emilythacker.chorelist.MainActivity">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/customListView_ID"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true"
android:layout_marginTop="50dp" />
<Button
android:text="Add Chore"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true"
android:id="@+id/button_ID" />
</RelativeLayout>
custom_listview_row.xml
<?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>
Protokoll Katze Nachrichten
D/ViewRootImpl: MSG_RESIZED: ci=Rect(0, 96 - 0, 1128) vi=Rect(0, 96 - 0, 1128) or=1
D/ViewRootImpl: #3 mView = null
W/IInputConnectionWrapper: getTextBeforeCursor on inactive InputConnection
E/ViewRootImpl: sendUserActionEvent() mView == null
W/IInputConnectionWrapper: getSelectedText on inactive InputConnection
W/IInputConnectionWrapper: getTextAfterCursor on inactive InputConnection
W/IInputConnectionWrapper: getExtractedText on inactive InputConnection
W/IInputConnectionWrapper: beginBatchEdit on inactive InputConnection
W/IInputConnectionWrapper: endBatchEdit on inactive InputConnection
D/ViewRootImpl: MSG_RESIZED: ci=Rect(0, 96 - 0, 0) vi=Rect(0, 96 - 0, 0) or=1
V/ActivityThread: updateVisibility : ActivityRecord{e0eeb0a [email protected]
Haben Sie versucht, Runnable nicht zu verwenden? –