摘要:
activity_main <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="ma 阅读全文
摘要:
package com.example.sq; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database. 阅读全文