Mega Code Archive
To do list app
<![CDATA[
package app.test;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.util.AttributeSet;
import android.view.ContextMenu;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnKeyListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
class TodoListItemView extends TextView {
private Paint marginPaint;
private Paint linePaint;
private int paperColor;
private float margin;
public TodoListItemView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
public TodoListItemView(Context context) {
super(context);
init();
}
public TodoListItemView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
private void init() {
marginPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
marginPaint.setColor(Color.RED);
linePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
linePaint.setColor(Color.BLUE);
paperColor = Color.YELLOW;
margin = Color.CYAN;
}
@Override
public void onDraw(Canvas canvas) {
canvas.drawColor(paperColor);
canvas.drawLine(0, 0, getMeasuredHeight(), 0, linePaint);
canvas.drawLine(0, getMeasuredHeight(), getMeasuredWidth(),
getMeasuredHeight(), linePaint);
canvas.drawLine(margin, 0, margin, getMeasuredHeight(), marginPaint);
canvas.save();
canvas.translate(margin, 0);
super.onDraw(canvas);
canvas.restore();
}
}
public class Test extends Activity {
private ArrayList<String> todoItems;
private ListView myListView;
private EditText myEditText;
private ArrayAdapter<String> aa;
private boolean addingNew = false;
final int ADD_NEW_TODO = Menu.FIRST;
final int REMOVE_TODO = Menu.FIRST + 1;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
myListView = (ListView) findViewById(R.id.myListView);
myEditText = (EditText) findViewById(R.id.myEditText);
todoItems = new ArrayList<String>();
aa = new ArrayAdapter<String>(getApplicationContext(), R.layout.row,
todoItems);
myListView.setAdapter(aa);
myEditText.setOnKeyListener(new OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN)
if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
todoItems.add(0, myEditText.getText().toString());
myEditText.setText("");
aa.notifyDataSetChanged();
cancelAdd();
return true;
}
return false;
}
});
registerForContextMenu(myListView);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
MenuItem itemAdd = menu.add(0, ADD_NEW_TODO, Menu.NONE, "add_new");
MenuItem itemRem = menu.add(0, REMOVE_TODO, Menu.NONE, "remove");
itemAdd.setIcon(R.drawable.icon);
itemRem.setIcon(R.drawable.icon);
itemAdd.setShortcut('0', 'a');
itemRem.setShortcut('1', 'r');
return true;
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
menu.setHeaderTitle("Selected To Do Item");
menu.add(0, REMOVE_TODO, Menu.NONE, "remove");
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
int idx = myListView.getSelectedItemPosition();
MenuItem removeItem = menu.findItem(REMOVE_TODO);
removeItem.setTitle("remove");
removeItem.setVisible(addingNew || idx > -1);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
super.onOptionsItemSelected(item);
int index = myListView.getSelectedItemPosition();
switch (item.getItemId()) {
case (REMOVE_TODO): {
if (addingNew) {
cancelAdd();
} else {
removeItem(index);
}
return true;
}
case (ADD_NEW_TODO): {
addNewItem();
return true;
}
}
return false;
}
@Override
public boolean onContextItemSelected(MenuItem item) {
super.onContextItemSelected(item);
switch (item.getItemId()) {
case (REMOVE_TODO): {
AdapterView.AdapterContextMenuInfo menuInfo = (AdapterView.AdapterContextMenuInfo) item
.getMenuInfo();
int index = menuInfo.position;
removeItem(index);
return true;
}
}
return false;
}
private void cancelAdd() {
addingNew = false;
myEditText.setVisibility(View.GONE);
}
private void addNewItem() {
addingNew = true;
myEditText.setVisibility(View.VISIBLE);
myEditText.requestFocus();
}
private void removeItem(int _index) {
todoItems.remove(_index);
aa.notifyDataSetChanged();
}
}
//main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<EditText
android:id="@+id/myEditText"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text=""
android:visibility="gone"
/>
<ListView
android:id="@+id/myListView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
//row.xml
<?xml version="1.0" encoding="utf-8"?>
<app.test.TodoListItemView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:scrollbars="vertical"
android:fadingEdge="vertical"
/>
]]>