Question

我正在尝试创建一个Android应用程序，我是一个相对新手。我试着使用多个图像按钮，但是，我无法让它工作，这是我正在使用的代码。

Public class MapScreen extends Activity
{

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


  ImageButton ib1,ib2,ib3,ib4,ib5;

   ib1= (ImageButton) findViewById(R.id.go_to_lagan_screen);
   ib2= (ImageButton) findViewById(R.id.go_to_city);
   ib3= (ImageButton) findViewById(R.id.go_to_university);
   ib4= (ImageButton) findViewById(R.id.go_to_icon_screen);
   ib5= (ImageButton) findViewById(R.id.map_to_home_screen);


   ib1.setOnClickListener(new View.OnClickListener()
   {
      @Override
      public void onClick(View v)
      {
         Intent intent = new Intent (v.getContext(), LaganArea.class);
         startActivityForResult(intent,0);
         //To change body of implemented methods use File | Settings | File Templates.
      }
   } );

   ib2.setOnClickListener((new View.OnClickListener()
   {
      @Override
      public void onClick(View v)
      {
         Intent intent1= new Intent (v.getContext(), CityCentre.class);
         startActivityForResult(intent1,0);
         //To change body of implemented methods use File | Settings | File Templates.
      }
   }));
   ib3.setOnClickListener((new View.OnClickListener()
   {
      @Override
      public void onClick(View v)
      {
         Intent intent2= new Intent (v.getContext(), UniversityArea.class);
         startActivityForResult(intent2,0);
         //To change body of implemented methods use File | Settings | File Templates.
      }
   }));
   ib4.setOnClickListener((new View.OnClickListener()
   {
      @Override
      public void onClick(View v)
      {
         Intent intent3= new Intent (v.getContext(), TheIcons.class);
         startActivityForResult(intent3,0);

         //To change body of implemented methods use File | Settings | File Templates.
      }
   }));
   ib5.setOnClickListener((new View.OnClickListener()
   {
      @Override
      public void onClick(View v)
      {
         Intent intent4= new Intent (v.getContext(), MyActivity.class);
         startActivityForResult(intent4,0);
         //To change body of implemented methods use File | Settings | File Templates.
      }
   }));
}

}

我不知道我是否错过了一些愚蠢的事情，或者我是否以完全错误的方式对待它。但是，额外的一双眼睛将非常感激。

Answer 1

试试这个。不要忘记在清单上添加这些活动。你可以使用switch / case来获得干净的小代码。

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


          ImageButton ib1,ib2,ib3,ib4,ib5;

           ib1= (ImageButton) findViewById(R.id.go_to_lagan_screen);
           ib2= (ImageButton) findViewById(R.id.go_to_city);
           ib3= (ImageButton) findViewById(R.id.go_to_university);
           ib4= (ImageButton) findViewById(R.id.go_to_icon_screen);
           ib5= (ImageButton) findViewById(R.id.map_to_home_screen);


           ib1.setOnClickListener(new View.OnClickListener()
           {
              @Override
              public void onClick(View v)
              {
                 Intent intent = new Intent (MapScreen.this, LaganArea.class);
                 startActivity(intent);

              }
           } );

           ib2.setOnClickListener((new View.OnClickListener()
           {
              @Override
              public void onClick(View v)
              {
                 Intent intent1= new Intent (MapScreen.this, CityCentre.class);
                 startActivity(intent1);
                 //To change body of implemented methods use File | Settings | File Templates.
              }
           }));
           ib3.setOnClickListener((new View.OnClickListener()
           {
              @Override
              public void onClick(View v)
              {
                 Intent intent2= new Intent (MapScreen.this, UniversityArea.class);
                 startActivity(intent2);
                 //To change body of implemented methods use File | Settings | File Templates.
              }
           }));
           ib4.setOnClickListener((new View.OnClickListener()
           {
              @Override
              public void onClick(View v)
              {
                 Intent intent3= new Intent (MapScreen.this, TheIcons.class);
                 startActivity(intent3);

                 //To change body of implemented methods use File | Settings | File Templates.
              }
           }));
           ib5.setOnClickListener((new View.OnClickListener()
           {
              @Override
              public void onClick(View v)
              {
                 Intent intent4= new Intent (MapScreen.this, MyActivity.class);
                 startActivity(intent4);
                 //To change body of implemented methods use File | Settings | File Templates.
              }
           }));
        }

Answer 2

首先在Manifest中声明活动。

尝试这样的每项活动：

 ib1.setOnClickListener(new View.OnClickListener()
   {
      @Override
      public void onClick(View v)
      {
         startActivity(new Intent (MapScreen.this , LaganArea.class));

      }
   } );

Android开发 - 使用多个图像按钮

2 个答案: