Android_Review_1_res

to handle with all the res in android.

1. to Vetorize all the png or jpeg formated image/graphics, in this way the graphics matches all screen sizes.

   https://www.vectorizer.io

   

2. then use SVG-XML converter.

   To start Vector Asset Studio:

   1.In Android Studio, open an Android app project.

   2.In the Project window, select the Android view.

   3.Right-click the res folder and select New > Vector Asset.

   4. Vector Asset Studio appears.

   https://www.twblogs.net/a/5b8ece372b7177188347e26a

   5. or use 3-party svg-vector converter to generate the android tag xml file.

   https://romannurik.github.io/AndroidAssetStudio/

   

   

   

   

   

   

   

   

   

3. drag them to res/drawable.

   

   

4. use them in xml layout file.

     <ImageView
     android:id="@+id/dice_image"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:layout_gravity="center_horizontal"
     android:src="@drawable/dice_1" />
   

5. code.

        package com.katepatty.luckyroller
   
     import androidx.appcompat.app.AppCompatActivity
     import android.os.Bundle
     import android.util.Log.d
     import android.widget.ImageView
     import android.widget.TextView
     import kotlinx.android.synthetic.main.activity_main.*
   
     class MainActivity : AppCompatActivity() {
   
         override fun onCreate(savedInstanceState: Bundle?) {
             super.onCreate(savedInstanceState)
             setContentView(R.layout.activity_main)
   
             roller()
   
         }
   
         private fun roller(){
   
             // 宣告容器變數
             val outputStr: TextView = findViewById(R.id.rollResultTxt)
             val outputImg: ImageView = findViewById(R.id.rollResultImg)
   
             // 生出隨機值
             val randomInt = (1..4).random()
   
             // 將隨機值指派給容器變數的屬性中
             //outputStr.text = randomInt.toString()
             //rollResultTxt. got its method too
   
             val randomTxt = when (randomInt){
   
                 1 -> "好運連連"
                 2 -> "貴人加持"
                 3 -> "喜憂參半"
                 else -> "請回府，記得拜拜喔！下次再來玩～"
   
             }
   
             val randomSrc = when (randomInt) {
   
                 1 -> R.drawable.notbad
                 2 -> R.drawable.home
                 3 -> R.drawable.gotpower
                 4 -> R.drawable.backhome
                 else -> R.drawable.luck
   
             }
             // below resId = 容器變數放回呼值
             outputImg.setImageResource(randomSrc)
             outputStr.setText(randomTxt)
   
         }
     }