public class NoteSearch extends ListActivity implements
SearchView.onQueryTextListener {
private static final String[] PROJECTION = new String[] {
NotePad.Notes._ID, // 0
NotePad.Notes.COLUMN_NAME_TITLE, // 1
//扩展 显示时间 颜色
NotePad.Notes.COLUMN_NAME_MODIFICATION_DATE // 2
//NotePad.Notes.COLUMN_NAME_BACK_COLOR
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.note_search_list);
Intent intent = getIntent();
if (intent.getData()
== null) {
intent.setData(NotePad.Notes.CONTENT_URI);
}
SearchView searchview =
(SearchView)findViewById(R.id.search_view);
//为查询文本框注册监听器
searchview.setonQueryTextListener(NoteSearch.this);
}
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
String selection = NotePad.Notes.COLUMN_NAME_TITLE + " Like ? ";
String[] selectionArgs = { “%”+newText+"%" };
Cursor cursor = managedQuery(
getIntent().getData(), PROJECTION,
selection, selectionArgs, NotePad.Notes.DEFAULT_SORT_ORDER
);
String[] dataColumns = {
NotePad.Notes.COLUMN_NAME_TITLE
, NotePad.Notes.COLUMN_NAME_MODIFICATION_DATE };
int[]
viewIDs = { android.R.id.text1
, R.id.text1_time };
SimpleCursorAdapter adapter = new SimpleCursorAdapter(
this,
R.layout.noteslist_item,
cursor,
dataColumns,
viewIDs
);
setListAdapter(adapter);
return true;
}
@Override
protected void onListItemClick(ListView l, View v, int position, long
id) {
Uri uri = ContentUris.withAppendedId(getIntent().getData(),
id);
String action
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= getIntent().getAction();
if (Intent.ACTION_PICK.equals(action)
|| Intent.ACTION_GET_CONTENT.equals(action)) {
setResult(RESULT_OK, new Intent().setData(uri));
} else {
startActivity(new Intent(Intent.ACTION_EDIT, uri));
}
}
}
3.时间戳的实现
在文本下方显示时间
文本标题（noteslist_item.xml）
android:id="@android:id/text1" android:layout_width=“match_parent” android:layout_height="?android:attr/listPreferredItemHeight" android:textAppearance="?android:attr/textAppearanceLarge" android:gravity=“center_vertical” android:paddingLeft=“5dip” android:singleLine=“true” /> 我们要在标题下方添加时间，那么可以再写一个时间的TextView，把标题和时间的TextView放入垂直线性布局内就好了 android:id="@+id/layout" android:layout_width=“match_parent” android:layout_height=“match_parent” android:orientation=“vertical”> android:id="@android:id/text1" android:layout_width=“match_parent” android:layout_height="?android:attr/listPreferredItemHeight" android:textAppearance="?android:attr/textAppearanceLarge" android:gravity=“center_vertical” android:paddingLeft=“5dip” android:singleLine=“true” /> android:id="@+id/text1_time" android:layout_width=“match_parent” android:layout_height=“wrap_content” android:textAppearance="?android:attr/textAppearanceSmall" android:text="@string/text_title" android:paddingLeft=“5dip” /> 在数据库中存放时间（NotePadProvider） public void onCreate(SQLiteDatabase db) { db.execSQL(“CREATE TABLE " + NotePad.Notes.TABLE_NAME + " (” NotePad.Notes._ID + " INTEGER PRIMARY KEY," NotePad.Notes.COLUMN_NAME_TITLE + " TEXT," NotePad.Notes.COLUMN_NAME_NOTE + " TEXT," NotePad.Notes.COLUMN_NAME_CREATE_DATE + " INTEGER," NotePad.Notes.COLUMN_NAME_MODIFICATION_DATE + " INTEGER" “);”); } 通过Cursor从数据库中读取出 Cursor cursor = managedQuery( getIntent().getData(), // Use the default content URI for the provider. PROJECTION, // Return the note ID and title for each note. null, // No where clause, return all records. null, // No where clause, therefore no where column values. NotePad.Notes.DEFAULT_SORT_ORDER // Use the default sort order. ); 通过SimpleCursorAdapter装填 String[] dataColumns = { NotePad.Notes.COLUMN_NAME_TITLE } ; int[] viewIDs = { android.R.id.text1 }; SimpleCursorAdapter adapter = new SimpleCursorAdapter( this, // The Context for the ListView
