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listView에서 작업 중이고 두 번째 텍스트 (대화 상자로 version_number)를 변경하고 싶습니다. 따라서 사용자가 목록 항목을 클릭하면 EditText 필드가있는 대화 상자가 나타나고 '예'(양수 값)를 입력하면 텍스트 값이 사용자가 입력 한 텍스트로 변경됩니다.대화 상자를 사용하여 listView에서 TextView의 텍스트를 변경하는 방법
여기 내 코드
HealthActivity.java의
public class HealthActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_health);
final ArrayList<List> disease = new ArrayList<List>();
disease.add(new List("BP", "120/80", R.drawable.blood_pressure));
disease.add(new List("Sugar Level(before meal)", "90", R.drawable.sugar));
disease.add(new List("Sugar Level(after meal)", "130", R.drawable.sugar1));
disease.add(new List("Pulse Rate", "70", R.drawable.heart_rate));
disease.add(new List("Heart Rate", "70", R.drawable.heart_rate));
ListAdapter listAdapter = new ListAdapter(this, disease);
// Find the {@link ListView} object in the view hierarchy of the {@link Activity}.
// There should be a {@link ListView} with the view ID called list, which is declared in the
// activity_numbers.xml layout file.
ListView listView = (ListView) findViewById(R.id.listview_flavor);
// Make the {@link ListView} use the {@link ArrayAdapter} we created above, so that the
// {@link ListView} will display list items for each word in the list of words.
// Do this by calling the setAdapter method on the {@link ListView} object and pass in
// 1 argument, which is the {@link ArrayAdapter} with the variable name itemsAdapter.
listView.setAdapter(listAdapter);
}
}
List.java
ListAdapter.java
public class ListAdapter extends ArrayAdapter<List> {
private static final String LOG_TAG =ListAdapter.class.getSimpleName();
/**
* This is our own custom constructor (it doesn't mirror a superclass constructor).
* The context is used to inflate the layout file, and the list is the data we want
* to populate into the lists.
*
* @param context The current context. Used to inflate the layout file.
* @param androidFlavors A List of AndroidFlavor objects to display in a list
*/
public ListAdapter(Activity context, ArrayList<List> androidFlavors) {
// Here, we initialize the ArrayAdapter's internal storage for the context and the list.
// the second argument is used when the ArrayAdapter is populating a single TextView.
// Because this is a custom adapter for two TextViews and an ImageView, the adapter is not
// going to use this second argument, so it can be any value. Here, we used 0.
super(context, 0, androidFlavors);
}
/**
* Provides a view for an AdapterView (ListView, GridView, etc.)
*
* @param position The position in the list of data that should be displayed in the
* list item view.
* @param convertView The recycled view to populate.
* @param parent The parent ViewGroup that is used for inflation.
* @return The View for the position in the AdapterView.
*/
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// Check if the existing view is being reused, otherwise inflate the view
View listItemView = convertView;
if(listItemView == null) {
listItemView = LayoutInflater.from(getContext()).inflate(
R.layout.list_item, parent, false);
}
// Get the {@link AndroidFlavor} object located at this position in the list
List currentAndroidFlavor = getItem(position);
// Find the TextView in the list_item.xml layout with the ID version_name
TextView nameTextView = (TextView) listItemView.findViewById(R.id.version_name);
// Get the version name from the current AndroidFlavor object and
// set this text on the name TextView
nameTextView.setText(currentAndroidFlavor.getDiseaseName());
// Find the TextView in the list_item.xml layout with the ID version_number
TextView numberTextView = (TextView) listItemView.findViewById(R.id.version_number);
// Get the version number from the current AndroidFlavor object and
// set this text on the number TextView
numberTextView.setText(currentAndroidFlavor.getPersonStatus());
ImageView iconView=(ImageView) listItemView.findViewById(R.id.image);
iconView.setImageResource(currentAndroidFlavor.getImageResourceId());
// Return the whole list item layout (containing 2 TextViews and an
ImageView)
// so that it can be shown in the ListView
return listItemView;
}
}
activity_health.xml
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/listview_flavor"
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"
/>
list_item.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:minHeight="?android:attr/listPreferredItemHeight"
android:orientation="horizontal"
android:paddingBottom="16dp"
android:paddingTop="16dp">
<ImageView
android:id="@+id/image"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginRight="16dp"
/>
<TextView
android:id="@+id/version_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textColor="#000000"/>
<TextView
android:id="@+id/version_number"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="2"
android:textColor="#000000"/>
</LinearLayout>