database---query中selection用法和selectionArgs用法
public doQuery(long id, final String name) {
mDb.query("some_table", // table name
null, // columns
"id=" + id + " AND name='" + name + "'", // selection
//...... 更多参数省略
);
}


public void doQuery(long id, final String name) {
mDb.query("some_table", // table name
null, // columns
"id=" + id + " AND name=?", // selection
new String[] {name}, //selectionArgs
//...... 更多参数省略
);
// ...... 更多代码
}