应用程序不在API 21中工作

Question

我有一个应用程序，其中包含带有图像的gridview。问题是它在除了API 21之外的所有手机中都显示出来，即Lollipop版本。在Lollipop中，它只显示背景而没有gridview。 targetSDK是21，minSDK是8.任何帮助都将非常感激。

＆＃13;

＆＃13;

MainActivity

public class MainView extends Activity {
	
	ImageView back, home, site, header;

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        
        requestWindowFeature(Window.FEATURE_NO_TITLE);
		setTheme(android.R.style.Theme_Translucent_NoTitleBar_Fullscreen);
	    getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER);
	    
        setContentView(R.layout.mainview);
        
        
        GridView gridView = (GridView)findViewById(R.id.gridview);
        gridView.setAdapter(new MyAdapter(this));
        
        gridView.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View v,
                    int position, long id) {
           	
            	 Intent myIntent = null;
                 if(position == 0){
                     myIntent = new Intent(v.getContext(), TheShow.class);
                 }
                 if(position == 1){
                     myIntent = new Intent(v.getContext(), Exhibitor.class);
                 }
                 if(position ==2){
                     myIntent = new Intent(v.getContext(), Visitor.class);
                 }  
                 if(position ==3){
                     myIntent = new Intent(v.getContext(), Conference.class);
                 }  
                 if(position ==4){
                     myIntent = new Intent(v.getContext(), ContactUs.class);
                 }
                 if(position == 5){
                	 myIntent = new Intent(v.getContext(), ExhibitorReg.class);
                 }
                 if(position == 6){
                	 myIntent = new Intent(v.getContext(), VisitorReg.class);
                 }
                 
                 if(position == 7){
                	 myIntent = new Intent(v.getContext(), FlrPlan.class);
                 } 
                
                 if(myIntent!=null){
                	   startActivity(myIntent); 
                	}
            	
            	
            }
        });
        
        back=(ImageView)findViewById(R.id.imageView2);
		home=(ImageView)findViewById(R.id.imageView3);
		site=(ImageView)findViewById(R.id.imageView4);
		
		back.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				MainView.this.onBackPressed();
			}
		});
		
		home.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Toast.makeText(getApplicationContext(), "Same Page", Toast.LENGTH_LONG).show();
			}
		});
		
		site.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				
			   String url = "http://india-aviation.in/";
 	    	   Intent i = new Intent(Intent.ACTION_VIEW);
 	    	   i.setData(Uri.parse(url));
 	    	   startActivity(i);
			}
		});
		
		header=(ImageView)findViewById(R.id.imageView1);
		header.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				
				final Dialog dialog = new Dialog(MainView.this);
				dialog.setContentView(R.layout.custom_dialog);
				dialog.setTitle("About Us");
				dialog.setCancelable(true);

				Button button = (Button) dialog.findViewById(R.id.buttonOK);
				button.setOnClickListener(new View.OnClickListener() {
					public void onClick(View v) {
						dialog.dismiss();
					}
				});

				dialog.show();

				
			}	
		

		});
		
        
    }

    private class MyAdapter extends BaseAdapter
    {
        private List<Item> items = new ArrayList<Item>();
        private LayoutInflater inflater;

        public MyAdapter(Context context)
        {
            inflater = LayoutInflater.from(context);

            items.add(new Item("The Show", R.drawable.globecopy1));
            items.add(new Item("Exhibitor", R.drawable.workcopy1));
            items.add(new Item("Visitor", R.drawable.visitor1copy1));
            items.add(new Item("Conference", R.drawable.conferencecopy1));
            items.add(new Item("Contact Us", R.drawable.contactus1copy1));
            items.add(new Item("Exhibitor Registration", R.drawable.exregistercopy1));
            items.add(new Item("Visitor Registration", R.drawable.anothercopy1));
            items.add(new Item("Layout Plan", R.drawable.registercopy1));
        }

        @Override
        public int getCount() {
            return items.size();
        }

        @Override
        public Object getItem(int i)
        {
            return items.get(i);
        }

        @Override
        public long getItemId(int i)
        {
            return items.get(i).drawableId;
        }

        @Override
        public View getView(int i, View view, ViewGroup viewGroup)
        {
            View v = view;
            ImageView picture;
            TextView name;

            if(v == null)
            {
               v = inflater.inflate(R.layout.gridview_item, viewGroup, false);
               v.setTag(R.id.picture, v.findViewById(R.id.picture));
               v.setTag(R.id.text, v.findViewById(R.id.text));
            }

            picture = (ImageView)v.getTag(R.id.picture);
            name = (TextView)v.getTag(R.id.text);

            Item item = (Item)getItem(i);

            picture.setImageResource(item.drawableId);
            name.setText(item.name);

            return v;
        }

        private class Item
        {
            final String name;
            final int drawableId;

            Item(String name, int drawableId)
            {
                this.name = name;
                this.drawableId = drawableId;
            }
        }
    }

}

＆＃13;

＆＃13;

＆＃13;

Answer 1

如果您的应用在res文件夹中有一个value-21文件夹，请在那里设置布局，或者如果您想要所有API的持久布局，请删除该文件夹。