android使用DOM来解析XML和做一个表情的弹出框的方法
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如何解析以下的xml:
(#大笑) (#微笑) (#亲亲) (#抱抱) (#色色) (#好失望哟)
这样来解析:
public class MessageFaceModel { /** single instance of this class */ private static MessageFaceModel instance = null; /** context */ private boolean mInitialized = false; private HashMapmFaceMap = new HashMap (); private ArrayList mFaceStrings = new ArrayList (); private ArrayList mFaceIcons = new ArrayList (); /** * constructor */ private MessageFaceModel(){ } /** * Factory method */ public static synchronized MessageFaceModel getInstance(){ if(instance == null){ instance = new MessageFaceModel(); } return instance; } /** * initialize face data */ public void init(Context context){ if(mInitialized){ //initialize only once return; } mFaceMap.clear(); mFaceStrings.clear(); mFaceIcons.clear(); AssetManager assetManager = context.getAssets(); ArrayList faces = new ArrayList (); DocumentBuilderFactory docBuilderFactory = null; DocumentBuilder docBuilder = null; Document doc = null; try { docBuilderFactory = DocumentBuilderFactory.newInstance(); docBuilder = docBuilderFactory.newDocumentBuilder(); doc = docBuilder.parse(assetManager.open("MessageFace.xml")); Element root = doc.getDocumentElement(); NodeList nodeList = root.getElementsByTagName("string"); for(int i =0;i< nodeList.getLength();i++) { Node node = nodeList.item(i); String s = ""; NodeList list = node.getChildNodes(); if(list != null){ for(int j = 0; j < list.getLength(); j++){ s += list.item(j).getNodeValue(); } } faces.add(s); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } finally{ doc = null; docBuilder = null; docBuilderFactory = null; } int i; for(i = 0; i < faces.size(); ++i){ int index = i + 1; int id = context.getResources().getIdentifier( "msgface_" + index, "drawable", "com.example.tianqitongtest"); try { Bitmap bm = BitmapFactory.decodeResource(context.getResources(),id); mFaceMap.put(faces.get(i), bm); mFaceStrings.add(faces.get(i)); mFaceIcons.add(bm); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } mInitialized = true; } public ArrayList getFaceIcons(){ return mFaceIcons; } public ArrayList getFaceStrings(){ return mFaceStrings; } public Bitmap getFaceIcon(String face){ if(mFaceMap != null){ return mFaceMap.get(face); }else{ return null; } } public void clear() { mInitialized = false; mFaceMap.clear(); mFaceStrings.clear(); mFaceIcons.clear(); } }
然后写这个Dialog样式的activity:
Layout是:
public class InputFaceActivity extends Activity{ private MessageFaceModel mMessageFaceModel = MessageFaceModel.getInstance(); public static final int SELECT_STATE_FACE_ICON = 209; public static final int SELECT_MESSAGE_FACE_ICON = 109; private int mWidth = 0; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); mWidth = this.getResources().getDimensionPixelSize(R.dimen.image_width); getWindow().setFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM, WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM); setContentView(R.layout.input_face_activity); GridView gridView = (GridView) findViewById(R.id.input_face_gridview); gridView.setAdapter(new FaceListAdapter()); gridView.setOnItemClickListener(new FaceListOnItemClickListener()); Button cancelButton = (Button)findViewById(R.id.input_face_cancel_button); cancelButton.setOnClickListener(new OnClickListener(){ @Override public void onClick(View arg0) { finish(); } }); } private class FaceListAdapter extends BaseAdapter { public int getCount() { if(mMessageFaceModel.getFaceIcons() != null){ return mMessageFaceModel.getFaceIcons().size(); }else{ return 0; } } public Object getItem(int arg0) { return arg0; } public long getItemId(int arg0) { return arg0; } public View getView(int position, View convertView, ViewGroup parent) { ImageView view = new ImageView(InputFaceActivity.this); view.setImageBitmap(mMessageFaceModel.getFaceIcons().get(position)); view.setLayoutParams(new GridView.LayoutParams(mWidth, mWidth)); view.setScaleType(ScaleType.CENTER); return view; } } }
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本文名称:android使用DOM来解析XML和做一个表情的弹出框的方法
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