截圖:

程式碼如下:

  第三方依賴庫地址:https://github.com/AndroidMsky/RandomTextView

第一步:新增倉庫

allprojects {
		repositories {
			...
			maven { url 'https://jitpack.io' }
		}
	}

第二步:

dependencies {
	        compile 'com.github.AndroidMsky:RandomTextView:v1.4'
	}

第三步:編寫xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <LinearLayout
        android:layout_below="@+id/iv_back"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:background="@mipmap/rule_bg">
    </LinearLayout>
    <TextView
        android:layout_width="match_parent"
        android:layout_height="@dimen/x40"
        android:text="幸運選號"
        android:textSize="@dimen/x16"
        android:gravity="center"
        android:background="#660108"/>
   <ImageView
       android:id="@+id/iv_back"
       android:layout_width="@dimen/x30"
       android:layout_height="@dimen/x30"
       android:src="@mipmap/back"/>

    <com.example.liangmutian.randomtextviewlibrary.RandomTextView
        android:id="@+id/rt_v"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:padding="0px"
        android:letterSpacing="0.5"
        android:text="00000"
        android:textSize="@dimen/x50"/>

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="@dimen/x40"
        android:onClick="start"
        android:text="幸運選號"
        android:background="@drawable/shape_dialog_text"
        android:layout_below="@+id/rt_v"
        android:layout_centerHorizontal="true"/>


</RelativeLayout>
 

第四步: 編寫Activity

public class RandomActivity extends Activity {
    private RandomTextView mRandomTextView;
    private int[] pianyiliang = new int[6];
    private ImageView imageView ;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_random);
        mRandomTextView =  findViewById(R.id.rt_v);
        imageView =  findViewById(R.id.iv_back);
        imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                finish();
            }
        });

        pianyiliang[0] = 10;
        pianyiliang[1] = 9;
        pianyiliang[2] = 8;
        pianyiliang[3] = 7;
        pianyiliang[4] = 6;
        pianyiliang[5] = 5;
        mRandomTextView.setPianyilian(pianyiliang);
        mRandomTextView.start();
    }


    public void start(View v) {
        int[] num = new int [5];
        Random random = new Random();
        String str = "";
        for (int i = 0 ;i <5 ; i++) {
            int randomInt = random.nextInt(10);
            num[i] = randomInt;
            str += num[i] + "";

            mRandomTextView.setText(str);
            pianyiliang[0] = 7;
            pianyiliang[1] = 6;
            pianyiliang[2] = 12;
            pianyiliang[3] = 8;
            pianyiliang[4] = 18;
            pianyiliang[5] = 10;
            mRandomTextView.setMaxLine(40);
            mRandomTextView.setPianyilian(pianyiliang);
            mRandomTextView.start();
        }
    }

}
 

 第五步:  點選執行Demo即可實現動態生成幸運數字的方法