android studio设置按钮响应事件的方法

ゞ浴缸里的玫瑰 2022-01-23 02:05 600阅读 0赞

package s1.ppp.com;
    
    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.view.View;
    import android.widget.Button;
    import android.widget.ImageView;
    import android.widget.TextView;
    
    import java.util.HashSet;
    import java.util.Random;
    
    public class MainActivity extends AppCompatActivity {
    
        //一共3步
        //1--声明按钮变量
        private Button btn01;
        private TextView tv01;
    
        private ImageView imageView;
        private int[] res_image = {R.mipmap.zhifubao01, R.mipmap.weixin01};
        private int index = 0;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            //2--用findViewById方法找到按钮的id
            //关联控件
            btn01 = (Button) findViewById(R.id.btn01);
    
            tv01 = (TextView) findViewById(R.id.tv01);
            imageView = (ImageView) findViewById(R.id.imageView);
    
    
            //3--设置监听器,重写监听回调方法
            btn01.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    //计算7个号码
                    String str = cal_Num1();
                    tv01.setText(str);
                }
            });
    
        }
    
    
        /**
         * 更换图片
         * @param v
         */
        public void changeImage(View v) {
    
            index++;
            if (index > res_image.length - 1) {
                index = 0;
            }
            imageView.setImageResource(res_image[index]);
    
        }
    
        /**
         * 双色球随机生成数字
         * 前6位，1--33个数字
         * 第7位，1-16个数字
         *
         * @return
         */
        public static String cal_Num1() {
            StringBuilder strBuf = new StringBuilder();
            HashSet<Integer> hashSet = new HashSet<>();
            Random r = new Random();
    
            // 生成1--33的数字，6组
            int i = 0;
            while (true) {
                i = r.nextInt(33) + 1;
                hashSet.add(i);
    
                if (hashSet.size() == 6) {
                    break;
                }
            }
    
            for (Integer k : hashSet) {
                strBuf.append(k + "  ");
            }
    
            Random r2 = new Random();
            int lan1 = r2.nextInt(16) + 1;
    
            strBuf.append(lan1);
    
            return strBuf.toString();
        }
    
    
    }

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adb连接模拟器的命令

@echo off
    
    adb.exe connect 127.0.0.1:7555
    
    pause
    
    adb.exe devices
    
    pause

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzMzE0Nzkz_size_16_color_FFFFFF_t_70 2]

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzMzE0Nzkz_size_16_color_FFFFFF_t_70 1]: /images/20220123/118b3278ae3b402cb46a4029c306f744.png
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