使用Handler实现打地鼠(下)

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package com.studio.handlerproject;import android.os.Handler;import android.os.Message;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.MotionEvent;import android.view.View;import android.widget.Button;import android.widget.ImageView;import android.widget.TextView;import android.widget.Toast;import java.lang.ref.WeakReference;import java.util.Random;public class DiglettActivity extends AppCompatActivity implements View.OnClickListener, View.OnTouchListener {    public static final int CODE = 123;    private TextView mResultTextView;    private ImageView mDiglettImageView;    private Button mStartButton;    public int[][] mPosition = new int[][]{            {342, 180}, {432, 880},            {521, 250}, {429, 780},            {456, 976}, {145, 665},            {123, 678}, {564, 567}    };    private int mTotalCount;    private int mSuccessCount;    public static final int MAX_COUNT = 10;    private DiglettHandler mHandler = new DiglettHandler(this);    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_diglett);        initView();        setTitle("打地鼠");    }    private void initView() {        mResultTextView = (TextView) findViewById(R.id.text_view);        mDiglettImageView = (ImageView) findViewById(R.id.image_view);        mStartButton = (Button) findViewById(R.id.start_button);        mStartButton.setOnClickListener(this);        mDiglettImageView.setOnTouchListener(this);    }    @Override    public void onClick(View view) {        switch (view.getId()) {            case R.id.start_button:                start();                break;        }    }    private void start() {        //发送消息 handler.sendmessagedelayed        mResultTextView.setText("开始");        mStartButton.setText("游戏中");        mStartButton.setEnabled(false);        next(0);    }    private void next(int delayTime) {        int position = new Random().nextInt(mPosition.length);        Message message = Message.obtain();        message.what = CODE;        message.arg1 = position;        mHandler.sendMessageDelayed(message, delayTime);        mTotalCount++;    }    @Override    public boolean onTouch(View view, MotionEvent motionEvent) {        view.setVisibility(View.GONE);        mSuccessCount++;        mResultTextView.setText("打到了" + mSuccessCount + "只，共" + MAX_COUNT + "只");        return false;    }    public static class DiglettHandler extends Handler {        public static final int RANDOM_NUMBER = 500;        public final WeakReference<DiglettActivity> mWeakReference;        public DiglettHandler(DiglettActivity activity) {            this.mWeakReference = new WeakReference<>(activity);        }        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            DiglettActivity activity = mWeakReference.get();            switch (msg.what) {                case CODE:                    if (activity.mTotalCount > MAX_COUNT) {                        activity.clear();                        Toast.makeText(activity, "地鼠打完了！", Toast.LENGTH_SHORT).show();                        return;                    }                    int position = msg.arg1;                    activity.mDiglettImageView.setX(activity.mPosition[position][0]);                    activity.mDiglettImageView.setY(activity.mPosition[position][1]);                    activity.mDiglettImageView.setVisibility(View.VISIBLE);                    int randomTime = new Random().nextInt(RANDOM_NUMBER) + RANDOM_NUMBER;                    activity.next(randomTime);                    break;            }        }    }    private void clear() {        mTotalCount = 0;        mSuccessCount = 0;        mDiglettImageView.setVisibility(View.GONE);        mStartButton.setText("点击开始");        mStartButton.setEnabled(true);    }}
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