<RelativeLayout 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:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/listView"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
<!--установил цвет выделения -->
android:listSelector="@color/item_color_test"
android:choiceMode="singleChoice" />
</RelativeLayout>package ru.domen.myapplication;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView listView = (ListView)findViewById(R.id.listView);
String[] data = {
"a","v","c"
};
listView.setAdapter(new ArrayAdapter<String>(this, R.layout.item, data));
listView.setItemChecked(1, true);
listView.setSelection(1);
Log.v("test", "sel: " + listView.getCheckedItemPosition());
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
getCheckedItemPosition() верная.
<RelativeLayout 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"
tools:context=".MainActivity">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:listSelector="@color/item_color_test"
android:id="@+id/listView"/>
</RelativeLayout>public class MainActivity extends AppCompatActivity {
private final static String KEY = "selectedRow";
private MyAdapter adapter;
private int selectedItem = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView listView = (ListView) findViewById(R.id.listView);
final String[] data = {
"a","v","c"
};
if(savedInstanceState != null && savedInstanceState.containsKey(KEY))
{
selectedItem = savedInstanceState.getInt(KEY);
}
adapter = new MyAdapter(this, R.layout.item, data, selectedItem);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String selected = data[position];
selectedItem = position;
adapter.setSelectedRow(selectedItem);
}
});
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt(KEY, selectedItem);
}
private class MyAdapter extends ArrayAdapter<String> {
final int resId;
int selectedRow;
public MyAdapter(Context context, int resId, String[] data, int selectedRow) {
super(context, resId, data);
this.resId = resId;
this.selectedRow = selectedRow;
selectedColor = getResources().getColor(R.color.item_color_test);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
String string = getItem(position);
if (convertView == null) {
convertView = LayoutInflater.from(getContext()).inflate(resId, null);
}
TextView textView = (TextView) convertView;
textView.setText(string);
textView.setBackgroundColor(position == selectedRow ? selectedColor : 0x00000000);
return convertView;
}
public void setSelectedRow(int row)
{
selectedRow = row;
notifyDataSetInvalidated();
}
}
}<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:paddingTop="20dp"
android:paddingBottom="20dp"
android:paddingLeft="10dp"/>
Простой
