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这篇文章主要介绍了android使用DOM来解析XML和做一个表情的弹出框的方法，具有一定借鉴价值，需要的朋友可以参考下。希望大家阅读完这篇文章后大有收获。下面让小编带着大家一起了解一下。
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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 HashMap mFaceMap = 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;
}
}
}感谢你能够认真阅读完这篇文章，希望小编分享android使用DOM来解析XML和做一个表情的弹出框的方法内容对大家有帮助，同时也希望大家多多支持创新互联，关注创新互联行业资讯频道，遇到问题就找创新互联，详细的解决方法等着你来学习!