- @Override public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- button = (Button) findViewById(R.id.button);
- et = (EditText) findViewById(R.id.edittext);
- tv = (TextView) findViewById(R.id.textview);
- initProgressDialog();
- Log.d(TAG, "thread run"); //在onCreate 方法里开启线程
- new Thread() {
- public void run() {
- // TODO Auto-generated method stub
- Log.d(TAG, "run start");
- dbhelper = new DBManager(AttrActivity.this); //执行我需要进行的导入数据库的操作
- dbhelper.openDatabase(); //////////////////////
- dbhelper.closeDatabase(); /////////////////////
- // handler.sendEmptyMessage(1);
- Message msg = new Message();
- msg.arg1 = 100; //message.arg1 携带100
- msg.arg2 = 200; //message.arg2 携带200
- msg.what = 1;
- handler.sendMessage(msg); //发送msg消息
- }
- }.start();
- //handler 为处理消息
- Handler handler = new Handler() {@Override public void handleMessage(Message msg) {
- // TODO Auto-generated method stub
- super.handleMessage(msg);
- if (msg.what == 1) { //handler 通过msg.what 判断线程发给他的msg 如果符合,执行msg.what对应操作,当然msg携带的变量也可以取出
- Log.d(TAG, "msg.arg1 = " + msg.arg1);
- Log.d(TAG, "msg.arg2 = " + msg.arg2);
- mProgressDialog.dismiss();
- }
- }
- };
- button.setOnClickListener(this);
- sqldb = SQLiteDatabase.openOrCreateDatabase(DBManager.DB_PATH + "/" + DBManager.DB_NAME, null);
- }
- public void initProgressDialog() {
- mProgressDialog = new ProgressDialog(AttrActivity.this);
- mProgressDialog.setTitle("~~~");
- mProgressDialog.setMessage("aaa");
- // mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
- mProgressDialog.show();
- }
来源: http://lib.csdn.net/snippet/android/49126