Android用Time和Calendar获取系统当前时间源码分享(年月日时分秒周几)

importandroid.app.Activity;

importandroid.os.Bundle;

importandroid.text.format.Time;

importandroid.view.View;

importandroid.widget.RelativeLayout;

importandroid.widget.TextView;

importjava.util.Calendar;

importbutterknife.BindView;

importbutterknife.ButterKnife;

importbutterknife.OnClick;

publicclassMainActivityextendsActivity {

 @BindView(R.id.tv_time)

 TextView tvTime;

 @BindView(R.id.activity_main)

 RelativeLayout activityMain;

 @BindView(R.id.tv_cal)

 TextView tvCal;

 Time time;

 @Override

 protectedvoidonCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

  setContentView(R.layout.activity_main);

  ButterKnife.bind(this);

  tvTime.setText("Time类");

  tvCal.setText("Calender类");

  initTime();

 }

 privatevoidinitTime() {

  time =newTime();

  time.setToNow();

 }

 @OnClick({R.id.tv_cal,R.id.tv_time})

 publicvoidonClick(View view) {

  switch(view.getId()) {

   caseR.id.tv_time://点击第一个

    //月份是从0-11算的，所以显示的话要+1

    String times = time.year +"年"+ time.month+1+"月"+ time.monthDay

      +"日"+ time.hour +"时"+ time.minute +"分"+ time.second +"秒"

      +":现在是一年中的第"+ time.yearDay +"天";

    tvTime.setText(times);

    break;

   caseR.id.tv_cal:

    Calendar cal=Calendar.getInstance();

    String time_cal=""+cal.get(Calendar.YEAR)+"-"+cal.get(Calendar.MONTH)+1+"-"+cal.get(Calendar.DATE)+" "

      +cal.get(Calendar.HOUR_OF_DAY)+":"+cal.get(Calendar.MINUTE);

    tvCal.setText(time_cal);

    break;

  }

 }

 @Override

 protectedvoidonDestroy() {

  super.onDestroy();

//  Unbinder unbinder=ButterKnife.bind(this);

//  unbinder.unbind();

  ButterKnife.bind(this).unbind();

 }

}

<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"

  xmlns:tools="http://schemas.android.com/tools"

  android:layout_width="match_parent"

  android:layout_height="match_parent"

  android:paddingBottom="@dimen/activity_vertical_margin"

  android:paddingLeft="@dimen/activity_horizontal_margin"

  android:paddingRight="@dimen/activity_horizontal_margin"

  android:paddingTop="@dimen/activity_vertical_margin"

  tools:context="com.example.sendinfo.MainActivity">

  <TextView

    android:id="@+id/tv_input_number"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:layout_alignParentLeft="true"

    android:layout_alignParentTop="true"

    android:text="@string/place_input_number"

    android:textSize="20px"/>

  <EditText

    android:id="@+id/et_number"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:layout_below="@id/tv_input_number"  

    android:inputType="phone">

  <TextView

    android:id="@+id/tv_input_content"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:layout_alignParentLeft="true"

    android:layout_below="@id/et_number"

    android:text="请输入正文"

    android:textSize="20px"

    android:textColor="#ff2800"/>

  <EditText

    android:lines="5"

    android:id="@+id/et_input_content"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:layout_alignParentLeft="true"

    android:layout_centerVertical="true"

    android:layout_below="@id/tv_input_content"

    android:inputType="textMultiLine"/>

  <Button

    android:id="@+id/bt_send"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:layout_alignParentLeft="true"

    android:layout_below="@id/et_input_content"

    android:text="发送"/>

packagecom.example.sendinfo;

importjava.util.ArrayList;

importjava.util.Iterator;

importandroid.os.Bundle;

importandroid.support.v7.app.ActionBarActivity;

importandroid.telephony.SmsManager;

importandroid.text.TextUtils;

importandroid.view.View;

importandroid.view.View.OnClickListener;

importandroid.widget.Button;

importandroid.widget.EditText;

importandroid.widget.Toast;

publicclassMainActivityextendsActionBarActivityimplementsOnClickListener {

  //获取数据的对象

  privateEditText et_number;

  privateEditText et_content;

  @Override

  protectedvoidonCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);

    et_number = (EditText) findViewById(R.id.et_number);

    et_ontent = (EditText) findViewById(R.id.et_input_content);

    Button bt_send = (Button) findViewById(R.id.bt_send);

    bt_send.setOnClickListener(this)

  }

  @Override

  publicvoidonClick(View v) {

    switch(v.getId()) {

    caR.id.bt_send:

      //获取用户输入的数据

      String content = et_content.getText().toString().trim();

      String number = et_number.getText().toString().trim();

      if(TextUtils.isEmpty(content) || TextUtils.isEmpty(number)){

        Toast.makeText(this,"电话号码或者内容不能为空", Toast.LENGTH_SHORT).show();

        return;

      }else{      

        //发送短信API   ：得到一个信息管理器 实例

        SmsManager smsManager = SmsManager.getDefault();

        //短信大于70字符时，则将短信拆分成多条发送

        ArrayListcontents = smsManager.divideMessage(content);

        for(String string : contents) {

          smsManager.sendTextMessage(number,null, string,null,null);

        }               

      }     

      break;

    default:

      break;

    }

  }

}

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

  android:shape="rectangle">

  <stroke

    android:width="1dp"

    android:color="#ce1818"/>

<Button

        android:layout_width="80dp"

        android:layout_height="50dp"

        android:background="@drawable/bg_red_hollow_rectangle"

        android:gravity="center"

        android:text="分享"/>