Android自定义View实现跟随手指移动的小兔子

<?xml version="1.0" encoding="utf-8"?>
//修改为帧布局管理器FrameLayout
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"


 android:layout_width="match_parent" android:layout_height="match_parent"
 android:paddingBottom="@dimen/activity_vertical_margin"
 android:paddingLeft="@dimen/activity_horizontal_margin"
 android:paddingRight="@dimen/activity_horizontal_margin"
 android:paddingTop="@dimen/activity_vertical_margin"

 
 android:background="@mipmap/bg1" #设置背景图
 android:id="@+id/activity_main" # 设置id


 tools:context="com.example.MainActivity">

 //删除原来的文本框
</FrameLayout>

package com.example;

/**
 * Created by hahaha on 2020/10/30.
 */

public class RabatView {
}

package com.example;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.view.View;

/**
 * Created by hahaha on 2020/10/30.
 */

//继承自View类
public class RabatView extends View{
 //设置小兔子位置
 public float bitmipX;
 public float bitmipY;

 public RabatView(Context context) {
 super(context);
 bitmipX = 290;
 bitmipY = 130;
 }


 @Override
 protected void onDraw(Canvas canvas) {
 super.onDraw(canvas);
 // 定义绘图对象
 Paint paint = new Paint();
 //定义绘图内容
 Bitmap bitmap = BitmapFactory.decodeResource(this.getResources(), R.mipmap.rabat);

 //开始绘图
 canvas.drawBitmap(bitmap, bitmipX, bitmipY, paint);
 if (bitmap.isRecycled()){
 bitmap.recycle();// 回收图片
 }
 }
}

package com.example;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.FrameLayout;

public class MainActivity extends AppCompatActivity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);

 //定义帧布局管理器对象，要强制转换类型
 FrameLayout frameLayout = (FrameLayout) findViewById(R.id.activity_main);
 //定义调用自定义RabatView 类对象
 final RabatView rabat = new RabatView(this);
 //设置触发事件
 rabat.setOnTouchListener(new View.OnTouchListener() {
 @Override
 public boolean onTouch(View view, MotionEvent motionEvent) {
 rabat.bitmipX = motionEvent.getX();//获取重新绘制图片的X位置
 rabat.bitmipY = motionEvent.getY();//获取重新绘制图片的Y位置
 rabat.invalidate();

 return true;
 }
 });
 frameLayout.addView(rabat);//添加进布局管理器
 }
}