Toast (토스트)

1. Toast

간단한 메시지를 잠깐 보여주었다가 없어지는 뷰로, 애플리케이션 위에 떠 있는 뷰라 할 수 있다.

Toast.makeText(Context context, String message, int duration)

public void setGravity(int gravity, int xOffset, int yOffset)

public void setMargin(float horizontalMargin, float verticalMargin)

2. 예제1 - 결과 화면

3. 예제1 - MainActivity.java

package com.tistory.qlyh8.pracitice;
 
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
 
public class MainActivity extends AppCompatActivity {
 
    Button button;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button = findViewById(R.id.button);
 
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast toast = Toast.makeText(getApplicationContext(), "위치가 바뀐 토스트", Toast.LENGTH_LONG);
                toast.setGravity(Gravity.TOP|Gravity.LEFT, 100, 200);
                toast.show();
            }
        });
    }
}
 

4. 예제2- 결과 화면

5. 예제2 - drawable/toast.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
 
    <stroke
        android:color="#295986"
        android:width="10dp"/>
 
    <solid android:color="#eac35f"/>
 
    <padding
        android:left="20dp"
        android:right="20dp"
        android:top="20dp"
        android:bottom="20dp"/>
 
    <corners android:radius="15dp"/>
</shape>

6. 예제2 - toast_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:id="@+id/toast_layout_root">
 
    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="20dp"
        android:textSize="20sp"
        android:background="@drawable/toast"/>
</LinearLayout>

7. 예제2 - MainActivty.java

package com.tistory.qlyh8.pracitice;
 
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
 
public class MainActivity extends AppCompatActivity {
 
    Button button;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button = findViewById(R.id.button);
 
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LayoutInflater inflater = getLayoutInflater();
                View layout = inflater.inflate(R.layout.toast_layout, (ViewGroup)findViewById(R.id.toast_layout_root));
 
                TextView textView = layout.findViewById(R.id.textView);
                textView.setText("모양이 바뀐 토스트");
 
                Toast toast = new Toast(getApplicationContext());
                toast.setGravity(Gravity.CENTER, 0, -100);
                toast.setDuration(Toast.LENGTH_LONG);
                toast.setView(layout);
                toast.show();
            }
        });
    }
}
 

출처: https://www.edwith.org/boostcourse-android/lecture/17052/