安卓---实验7---小猴子摘桃

文章目录

• PeachActivity.java
• MainActivity.java
• activity_main.xml
• activity_peach.xml

  

  PeachActivity.java

  public class PeachActivity extends AppCompatActivity implements View.OnClickListener {
      private ImageView imageView1, imageView2, imageView3, imageView4, imageView5, imageView6;
      private Button btn;
      private int cnt = 0;  //摘桃子的个数
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_peach);
          initView();
      }
      public void initView() {
          imageView1 = findViewById(R.id.peach_1);
          imageView2 = findViewById(R.id.peach_2);
          imageView3 = findViewById(R.id.peach_3);
          imageView4 = findViewById(R.id.peach_4);
          imageView5 = findViewById(R.id.peach_5);
          imageView6 = findViewById(R.id.peach_6);
          btn = findViewById(R.id.btn_exit);
          //监听器
          imageView1.setOnClickListener(this);
          imageView2.setOnClickListener(this);
          imageView3.setOnClickListener(this);
          imageView4.setOnClickListener(this);
          imageView5.setOnClickListener(this);
          imageView6.setOnClickListener(this);
          btn.setOnClickListener(this);
      }
      @Override
      public void onClick(View view) {
          //实现点击事件
          switch (view.getId()) {
              case R.id.peach_1:
                  info(imageView1);
                  break;
              case R.id.peach_2:
                  info(imageView2);
                  break;
              case R.id.peach_3:
                  info(imageView3);
                  break;
              case R.id.peach_4:
                  info(imageView4);
                  break;
              case R.id.peach_5:
                  info(imageView5);
                  break;
              case R.id.peach_6:
                  info(imageView6);
                  break;
              case R.id.btn_exit:
                  returnData();
                  break;
          }
      }
      private void returnData() {
          //将数据回传到上个界面
          Intent intent = new Intent();
          intent.putExtra("cnt", cnt);
          setResult(1002, intent);   //1是返回码
          PeachActivity.this.finish();
      }
      //桃子的点击事件处理
      private void info(ImageView imageView) {
          cnt++;
          imageView.setVisibility(View.INVISIBLE);
          Toast.makeText(PeachActivity.this, "摘了" + cnt + "个桃子", Toast.LENGTH_LONG).show();
      }
      @Override
      public boolean onKeyDown(int keyCode, KeyEvent event) {
          if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
              returnData();
              return true;
          }
          return false;
      }
  }
  

  MainActivity.java

  public class MainActivity extends AppCompatActivity {
      private Button btn1; //去桃园按钮
      private TextView tv_cnt;
      private int totalCnt;
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
          initView();
      }
      private void initView() {
          btn1 = findViewById(R.id.btn_enter);
          tv_cnt = findViewById(R.id.tv_cnt);
          //为"去桃园"按钮增加监听事件，点击这个按钮，跳转到桃园界面
          btn1.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View view) {
                  Intent intent = new Intent(MainActivity.this, PeachActivity.class);
                  startActivityForResult(intent, 1001);
              }
          });
      }
      //  用来接收上个界面传过来的信息的
      @Override
      protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
          super.onActivityResult(requestCode, resultCode, data);
          if (requestCode == 1001 && resultCode == 1002) {
              int cnt = data.getIntExtra("cnt", 0);
              totalCnt = totalCnt + cnt;
              tv_cnt.setText("摘了" + totalCnt + "桃子");
          }
      }
  }
  

  activity_main.xml

  activity_peach.xml