[Android] 안드로이드 스튜디오 핸들러 이용한 프로그레스바 구현

두개의 xml과 두개의 java로 구성

메인에선 프로그레스 바를 구성하고

서브에선 이미지를 구성

 

메인 xml

 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center"
tools:context=".MainActivity">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Remove The Bomb"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />

<ProgressBar
android:id="@+id/progressBar"
android:layout_width="match_parent"
style="@style/Widget.AppCompat.ProgressBar.Horizontal"
android:layout_height="wrap_content"
android:max="100"
android:progress="100"
/>

<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="STOP" />

<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="START" />

</LinearLayout>

 

메인자바

package com.example.handlerprogresbar;

import android.content.Intent;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ProgressBar;

public class MainActivity extends AppCompatActivity {

public static final long DELAY_MS = 100;                        //1초마다 감소
public static final int WHAT_PROGRESS = 1;

private ProgressBar progressBar;
private Handler handler = new Handler(){
@Override
public void handleMessage(Message msg){
super.handleMessage(msg);

if(progressBar.getProgress()==1){                                      //프로그레스바가 1이면 시작
Intent intent = new Intent(MainActivity.this,submain.class);
startActivity(intent);

}

if(progressBar.getProgress()>0){                                         //프로그레스바가 0보다크면점점 줄어듬     
progressBar.setProgress(progressBar.getProgress()-1);                  
}

handler.sendEmptyMessageDelayed(WHAT_PROGRESS,DELAY_MS);
}
};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

progressBar = (ProgressBar)findViewById(R.id.progressBar);

handler.sendEmptyMessageDelayed(WHAT_PROGRESS,DELAY_MS);

Button button = (Button)findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {

handler.removeMessages(WHAT_PROGRESS);
}
});
Button button1 = (Button)findViewById(R.id.button1);
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {

handler.sendEmptyMessageDelayed(WHAT_PROGRESS,DELAY_MS);
}
});
}
}

 

서브 xml

 

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".submain">

<ImageView
android:id="@+id/image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src = "@drawable/bomb"
/>

</android.support.constraint.ConstraintLayout>

 

서브 자바

 

package com.example.handlerprogresbar;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class submain extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_submain);
}
}

 

이미지 화면

빨간색  (프로그레스바)  가 점점 줄어듬  stop과 start로 조작 가능

 

프로그레스 바가 0이 되면 이미지 출력