The Application Start interface is a simple countdown to the dialog, and the interface countdown to the dialog

The Application Start interface is a simple countdown to the dialog, and the interface countdown to the dialog

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout    xmlns: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:background="#FF85C17E"    tools:context="com.example.lesson7_2_id19_dialog.MainActivity"></RelativeLayout>

Dialog_start.xml

 1 <?xml version="1.0" encoding="utf-8"?> 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 3     android:layout_width="match_parent" 4     android:layout_height="match_parent" 5     android:background="@mipmap/timg"> 6  7     <TextView 8         android:id="@+id/tv_time" 9         android:gravity="center"10         android:background="@drawable/oval"11         android:layout_width="wrap_content"12         android:layout_height="wrap_content"13         android:text="3s"14         android:layout_alignParentRight="true"15         android:layout_margin="20dp"/>16 17 </RelativeLayout>

Oval. xml custom circle under drawable

 1 <?xml version="1.0" encoding="utf-8"?> 2 <shape xmlns:android="http://schemas.android.com/apk/res/android" 3     android:shape="oval"> 4     <padding 5         android:bottom="5dp" 6         android:left="5dp" 7         android:right="5dp" 8         android:top="5dp" /> 9     <stroke10         android:width="1dp"11         android:color="#7bf0f2" />12 </shape>

Java code:

1 package com. example. lesson7_2_id19_dialog; 2 3 import android. app. dialog; 4 import android. content. context; 5 import android. OS. bundle; 6 import android. OS. countDownTimer; 7 import android. support. annotation. nonNull; 8 import android. widget. textView; 9 10/** 11 * Created by Administrator on 0008.12 */13 14 public class StartDialog extends Dialog {15 // inherit the dialog override constructor 16 public StartDialog (@ NonNull Context context) {17 super (context, R. style. dialogStyle); 18 19} 20 21 TextView TV _time; 22 23 @ Override24 protected void onCreate (Bundle savedInstanceState) {25 super. onCreate (savedInstanceState); 26 setContentView (R. layout. dialog_start); 27 // set whether to disable the current control 28 setCancelable (false); 29 // find the TV _time control 30 TV _time = (TextView) findViewById (R. id. TV _time); 31 new DownTimer (). start (); 32} 33 34 // inherit from the CountDownTimer class 35 class DownTimer extends CountDownTimer {36 37 public DownTimer () {38 // set the time to 4 seconds 39 super (4000,100 0 ); 40} 41 // override CountDownTimer's two Methods 42 @ Override43 public void onTick (long millisUntilFinished) {44 TV _time.setText (millisUntilFinished/1000 + "s "); 45} 46 47 @ Override48 public void onFinish () {49 StartDialog. this. dismiss (); 50 51} 52 53} 54}

1 package com. example. lesson7_2_id19_dialog; 2 3 import android. content. dialogInterface; 4 import android. OS. bundle; 5 import android. support. v7.app. appCompatActivity; 6 import android. widget. toast; 7 8 public class MainActivity extends AppCompatActivity {9 10 @ Override11 protected void onCreate (Bundle savedInstanceState) {12 super. onCreate (savedInstanceState); 13 setContentView (R. layout. activity_main); 14 StartDialog dialog = new StartDialog (this); 15 dialog. show (); 16 dialog. setOnDismissListener (new DialogInterface. onDismissListener () {17 @ Override18 public void onDismiss (DialogInterface dialog) {19 Toast. makeText (MainActivity. this, "application start page closed", Toast. LENGTH_SHORT ). show (); 20} 21}); 22} 23}