西安邮电大学经济与管理学院移动电子商务课件第8章 数据存储与访问.pptVIP

8.4 数据共享 8.4.4 示例 111 @Override 112 public int update(Uri uri, ContentValues values, String selection, 113 String[] selectionArgs) { 114 int count; 115 switch(uriMatcher.match(uri)){ 116 case MULTIPLE_PEOPLE: 117 count = db.update(DB_TABLE, values, selection, selectionArgs); 118 break; 119 case SINGLE_PEOPLE: 120 String segment = uri.getPathSegments().get(1); 121 count = db.update(DB_TABLE, values, People.KEY_ID+=+segment, selectionArgs); 122 break; 8.4 数据共享 8.4.4 示例 123 default: 124 throw new IllegalArgumentException(Unknow URI: + uri); 125 } 126 getContext().getContentResolver().notifyChange(uri, null); 127 return count; 128 } 129 130 131 private static class DBOpenHelper extends SQLiteOpenHelper { 132 133 public DBOpenHelper(Context context, String name, CursorFactory factory, int version) { 134 super(context, name, factory, version); 135 } 136 8.4 数据共享 8.4.4 示例 137 private static final String DB_CREATE = create table + 138 DB_TABLE + ( + People.KEY_ID + integer primary key autoincrement, + 139 People.KEY_NAME+ text not null, + People.KEY_AGE+ integer, + People.KEY_HEIGHT + float);; 140 141 @Override 142 public void onCreate(SQLiteDatabase _db) { 143 _db.execSQL(DB_CREATE); 144 } 145 146 @Override 8.4 数据共享 8.4.4 示例 147