摘要：layout/imageswitch.xml<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ImageSwitcher android:id=& 阅读全文

摘要：参考Android拍照、录像、录音代码范例public class MyCameraActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button btnCamera = (But... 阅读全文

摘要：详情参考 某android平板项目开发笔记---计划任务备份新建一个类继承 AsyncTaskpublic class BackupTask extends AsyncTask<String, Void, Integer> { private static final String COMMAND_BACKUP = "backupDatabase"; public static final String COMMAND_RESTORE = "restroeDatabase"; private Context mContext; public 阅读全文

摘要：// 新建一个toast对象private Toast toast; public void showMsg(String arg) { if (toast == null) { toast = Toast.makeText(this, arg, Toast.LENGTH_SHORT); } else { toast.cancel(); toast.setText(arg); } toast.show(); }res/drawable目录下面建立一个设置圆角边框... 阅读全文

摘要：第一步： 创建表CREATE TABLE DLION ( _id INTEGER PRIMARY KEY AUTOINCREMENT, content TEXT, questionId INTEGER, answerId INTEGER, [right] INTEGER );第二步： 把编辑文本内容并放到 res/raw/test.txt 用Notepad++ 打开，把每一个将要放在表中单元格的内容放一行(注：^ 代表行首$ 代表行尾) 去除行尾空格和空白行：按CTRL+H 选择正则表达式-- 查找目标：\s+$ 替换为空　... 阅读全文

摘要：import java.util.ArrayList;import java.util.List;import java.util.Random;public class H { public static void main(String args[]) { int N = 10; List<Integer> list = new ArrayList<Integer>(); for (int i = 0; i < N; i++) { list.add(i + 1); } int count = ... 阅读全文

摘要：先在 Manifest 里添加权限<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /><uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />然后在 mainActivity 添加方法 SQLiteDatabase db; private final String DATABASE_PATH = android.os.Environ 阅读全文