BACK-END/Android
[Android] 안드로이드의 Alert창, Toast 사용방법
단비_danbee
2020. 11. 9. 16:19
developer.android.com/reference/android/widget/Toast
A toast is a view containing a quick little message for the user. |
toast 는 사용자를 위한 작은 메시지 알림이다. |
Toast.LENGTH_SHORT | Toast.LENGTH_LONG |
2초 | 4초 |
| MainActivity.java
Toast.makeText(MainActivity.this, "3번째 그림", Toast.LENGTH_SHORT).show();
package com.example.aro;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
TextView tv;
ImageView iv;
Button bt1, bt2, bt3;
int my[]={R.drawable.apple, R.drawable.banana, R.drawable.melon};
int cnt = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bt1 = this.findViewById(R.id.button1);
iv = this.findViewById(R.id.myImg);
bt1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
iv.setImageResource(my[cnt]);
cnt++;
if(cnt==3) {cnt=0;
Toast.makeText(MainActivity.this, "3번째 그림", Toast.LENGTH_SHORT).show();}
}
});
}//onCreate end
}//class end
| 출력결과