我有一个片段名称selectattributefragment.java，其中我有一个自定义列表视图，每行包括两个四个textview和一个复选框，使用简单的自定义适配器从sqlite数据库中获取textview数据，现在我想获取的值所选复选框的textview显示在按钮单击事件上
1. selectattributefragment.java
public class ObservationselectattributeFragment extends Fragment {
DatabaseHandler mDBHandler;
ListView mListView;
SimpleCursorAdapter mSCA;
Cursor mCsr;
ArrayList<String> attributeItems = new ArrayList<>();
SparseBooleanArray sparseBooleanArray ;
public ObservationselectattributeFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view=inflater.inflate(R.layout.fragment_observationselectattribute, container, false);
mListView = (ListView)view.findViewById(R.id.lv001);
mListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
Button addattribute = (Button)view.findViewById(R.id.addattribute);
addattribute.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String items="";
Integer tcount=0;
for(String item:attributeItems){
items+="-"+item+"\n";
tcount++;
}
Toast.makeText(getActivity(),"you have selected \n"+items,Toast.LENGTH_LONG).show();
Toast.makeText(getActivity(),"you have selected \n"+tcount,Toast.LENGTH_LONG).show();
FragmentTransaction fr= getFragmentManager().beginTransaction();
fr.replace(R.id.main_container, new ShowObservationDataRecordingFragment()).addToBackStack("ObservationselectattributeFragment");
fr.commit();
}
});
mDBHandler = new DatabaseHandler(this.getActivity());
mCsr = mDBHandler.getAllRecords();
// Prepare a list of the columns to get the data from, for the ListViewt
String[] columns_to_get_data_from = new String[]{
DatabaseHandler.KEY_IDS,
DatabaseHandler.KEY_NAMES,
DatabaseHandler.KEY_FNAME,
DatabaseHandler.KEY_MONAME
};
// Prepare a list of the Views into which to place the data
int[] itemviews_to_place_data_in = new int[]{
R.id.euserid,
R.id.eusername,
R.id.efname,
R.id.emoname
};
// get and instance of SimpleCursorAdapter
mSCA = new SimpleCursorAdapter(this.getActivity(),
R.layout.listviewitem_record,
mCsr,
columns_to_get_data_from,
itemviews_to_place_data_in,
0);
// get and instance of SimpleCursorAdapter the listviewitem_record layout
mListView.setAdapter(mSCA);
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String attributeItem = ((TextView)view).getText().toString();
if(attributeItems.contains(attributeItem)){
attributeItems.remove(attributeItem);//uncheck item
}
else
{
attributeItems.add(attributeItem);
}
}
});
((HomeActivity) getActivity())
.setActionBarTitle("Select Attribute");
return view;
}
}
2. selectattributefragment.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.akmu_11.aicrpreporter.ObservationselectattributeFragment">
<ListView
android:id="@+id/lv001"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
</ListView>
<Button
android:id="@+id/addattribute"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:layout_marginTop="20dp"
android:background="@color/colorPrimary"
android:text="Add Attribute"
android:textAllCaps="false"
android:textColor="@color/backgroundcolor"
android:textSize="22dp" />
</LinearLayout>
3. DatabaseHandler.java
public class DatabaseHandler extends SQLiteOpenHelper {
// Database Version
private static final int DATABASE_VERSION = 1;
// Database Name
public static final String DATABASE_NAME = "aicrpmain";
// Labels table name
public static final String TABLE_LABELS = "labels";
public static final String TABLE_RECORDS = "Records";
// Labels Table Columns names
public static final String KEY_ID = "id";
public static final String KEY_NAME = "name";
public static final String KEY_IDS = "_id";
public static final String KEY_NAMES = "names";
public static final String KEY_FNAME = "fname";
public static final String KEY_MONAME = "moname";
public DatabaseHandler(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
// Creating Tables
@Override
public void onCreate(SQLiteDatabase db) {
// Category table create query
String CREATE_CATEGORIES_TABLE = "CREATE TABLE " + TABLE_LABELS + "("
+ KEY_ID + " INTEGER PRIMARY KEY," + KEY_NAME + " TEXT)";
db.execSQL(CREATE_CATEGORIES_TABLE);
String CREATE_CONTACTS_TABLE = "CREATE TABLE " +
TABLE_RECORDS +
"(" +
KEY_IDS + " INTEGER PRIMARY KEY," +
KEY_NAMES + " TEXT," + KEY_FNAME + " TEXT," + KEY_MONAME + " TEXT)";
db.execSQL(CREATE_CONTACTS_TABLE);
}
// Upgrading database
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// Drop older table if existed
db.execSQL("DROP TABLE IF EXISTS " + TABLE_LABELS);
db.execSQL("DROP TABLE IF EXISTS " + TABLE_RECORDS);
// Create tables again
onCreate(db);
}
/**
* Inserting new lable into lables table
* */
/*public void insertLabel(String label){
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_NAME, label);
// Inserting Row
db.insert(TABLE_LABELS, null, values);
db.close(); // Closing database connection
}*/
/**
* Getting all labels
* returns list of labels
* */
public List<String> getAllLabels(){
List<String> labels = new ArrayList<String>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_LABELS;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
labels.add(cursor.getString(1));
} while (cursor.moveToNext());
}
// closing connection
cursor.close();
db.close();
// returning lables
return labels;
}
public List<String> getAllItems(){
List<String> dataitems = new ArrayList<String>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_LABELS;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
dataitems.add(cursor.getString(0));
} while (cursor.moveToNext());
}
// closing connection
cursor.close();
db.close();
// returning lables
return dataitems;
}
public Cursor getAllRecords() {
SQLiteDatabase db = this.getWritableDatabase();
return db.query(TABLE_RECORDS,null,null,null,null,null,null);
}
4. listviewitem_record.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="110dp"
android:layout_weight="8"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="Id"
android:textStyle="bold"
/>
<TextView
android:layout_width="110dp"
android:layout_weight="10"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="Name"
android:textStyle="bold"
/>
<TextView
android:layout_width="110dp"
android:layout_weight="10"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="Fname"
android:textStyle="bold"/>
<TextView
android:layout_width="110dp"
android:layout_weight="10"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="Moname"
android:textStyle="bold"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center"
android:layout_marginTop="-110dp">
<TextView
android:id="@+id/euserid"
android:layout_width="110dp"
android:layout_weight="8"
android:layout_height="wrap_content"
android:layout_margin="5dp"/>
<TextView
android:id="@+id/eusername"
android:layout_width="110dp"
android:layout_weight="10"
android:layout_height="wrap_content"
android:layout_margin="5dp"/>
<TextView
android:id="@+id/efname"
android:layout_width="110dp"
android:layout_weight="10"
android:layout_height="wrap_content"
android:layout_margin="5dp"/>
<TextView
android:id="@+id/emoname"
android:layout_width="110dp"
android:layout_weight="10"
android:layout_height="wrap_content"
android:layout_margin="5dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="-80dp"
android:layout_marginLeft="300dp"
>
<CheckBox
android:id="@+id/record_checkbox"
android:layout_width="110dp"
android:layout_weight="2"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:focusable="false"
/>
</LinearLayout>
</LinearLayout>