[Android] Toast 提示訊息

Toast toast;

toast=Toast.makeText(this,"早安您好",Toast.LENGTH_LONG);//停留長時間

toast=Toast.makeText(this,"早安您好",Toast.LENGTH_SHORT);//停留短時間

toast.show();

示範

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=".MainActivity">

android.support.constraint.ConstraintLayout>

JAVA

public class MainActivity extends AppCompatActivity  {
Toast toast;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
toast=Toast.makeText(this,"早安您好",Toast.LENGTH_SHORT);
toast.show();

    }



}

展示

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[Android] Android 程式設計教學