应用程序无法在API 21中运行

Question

我有一个应用程序，其中包含带有图像的gridview。 问题在于它在除API 21（即Lollipop版本）之外的所有手机中都显示。 在棒棒糖中，它仅显示背景，而没有gridview。 targetSDK是21，minSDK是8。在此方面提供的任何帮助将不胜感激。

 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; } } } } 

Answer 1

如果您的应用程序在res文件夹中有一个values-21文件夹，请在该位置设置布局，或者如果要为所有API设置永久布局，请删除该文件夹。