EffectDemo/app/src/main/java/com/xunao/effectdemo/activity/DragActivity.java

package com.xunao.effectdemo.activity;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.content.res.ResourcesCompat;

import android.app.Activity;
import android.content.ClipData;
import android.content.Intent;
import android.os.Bundle;
import android.os.SystemClock;
import android.util.Log;
import android.view.DragEvent;
import android.view.HapticFeedbackConstants;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.xunao.effectdemo.R;

public class DragActivity extends Activity{

    private static final String RED = "RED";

    private String selectedContent = "";
    private final String correctAnswer = "选项2";
    private int wrongNum = 0;


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

        TextView ll_red = findViewById(R.id.ll_red);
        TextView tv1 = findViewById(R.id.tv_1);
        TextView tv2 = findViewById(R.id.tv_2);

        tv1.setOnLongClickListener(v -> {
            selectedContent = tv1.getText().toString();
//                Intent intent = new Intent();
//                ClipData clipData = ClipData.newIntent("label", intent);
            View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(v);
            v.startDrag(null, shadowBuilder, tv1, 0);
            //震动反馈
            v.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS, HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING);
            return true;
        });

        tv2.setOnLongClickListener(v -> {
            selectedContent = tv2.getText().toString();
//                Intent intent = new Intent();
//                ClipData clipData = ClipData.newIntent("label", intent);
            View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(v);
            v.startDrag(null, shadowBuilder, tv2, 0);
            //震动反馈
            v.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS, HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING);
            return true;
        });

        ll_red.setOnDragListener((v, event) -> {
            String simpleName = v.getClass().getSimpleName();
            Log.w(RED, "view name:" + simpleName);

            int action = event.getAction();
            switch (action) {
                case DragEvent.ACTION_DRAG_STARTED:
                    Log.i(RED, "开始拖拽");
//                        tv1.setVisibility(View.INVISIBLE);
                    break;
                case DragEvent.ACTION_DRAG_ENDED:
                    Log.i(RED, "结束拖拽");
//                        tv1.setVisibility(View.VISIBLE);
                    break;
                case DragEvent.ACTION_DRAG_ENTERED:
                    Log.i(RED, "拖拽的view进入监听的view时");
                    break;
                case DragEvent.ACTION_DRAG_EXITED:
                    Log.i(RED, "拖拽的view离开监听的view时");
                    break;
                case DragEvent.ACTION_DRAG_LOCATION:
                    float x = event.getX();
                    float y = event.getY();
                    Log.i(RED, "拖拽的view在RED中的位置:x =" + x + ",y=" + y);
                    break;
                case DragEvent.ACTION_DROP:
                    if(correctAnswer.equals(selectedContent)){
                        Log.i(RED, "释放拖拽的view");
                        TextView localState = (TextView) event.getLocalState();
                        ((ViewGroup) localState.getParent()).removeView(localState);
                        ll_red.setText(selectedContent);
                        ll_red.setBackground(ResourcesCompat.getDrawable(getResources(),R.drawable.drag_success_bg,null));
                    }else{
                        wrongNum = wrongNum + 1;
                        if(wrongNum >= 2){
                            tv2.setBackground(ResourcesCompat.getDrawable(getResources(),R.drawable.drag_hint_bg,null));
                        }
                    }
                    break;
            }
            return true;
        });

    }
}