android 常用代码

// 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参数的xml文件，如下：

corner_round.xml:

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android" >



    <solid android:color="#FFCC33" />



    <corners android:radius="10dp" />



</shape>

调用：android:background="@drawable/corner_round"

/**
* 获取当前日期
*/

protected String getNowTime() {

String nowTime = new SimpleDateFormat("yyyy年MM月dd日").format(new Date());

return nowTime;

}