您好我创建了完全基于xml的Android应用程序，因此我使用了sax解析器。现在我有一个疑问，我的疑问是如何将arraylist值一个活动解析为另一个活动。第一个我解释我的项目，我的第一个屏幕显示2spinner和一个网格视图。
两个微调器和网格视图显示我的xml标签字符串值，微调器显示一些字符串值，然后我的gridview在微调器底部显示一些图像。这是我的主屏幕。
如果我自动选择第一个微调器值，我的第二个微调器和网格视图也会改变....
我怀疑的是，如果我点击我的网格视图图像，打开一个标签布局。我在标签布局中添加了三个标签。现在标签只显示空白屏幕，但我想在第一个标签视图中显示一些文字。我在arraylist中存储了一些字符串值，arraylist名称是mspec_List。现在我尝试将一个活动的值解析为另一个活动？如果我点击我的图像，我想在我的第一个标签中显示我的arraylist文本，请大家帮帮我........
这是我的主要活动的全部来源：
public class ParxmlActivity extends Activity {
private String array_spinner[];
private Cursor cursor;
private int columnIndex;
ParsedExampleDataSet parsedExampleDataSet= null;
ArrayList<String> hltag_List=new ArrayList<String>();
ArrayList<Subchild>sltag_List=new ArrayList<Subchild>();
ArrayList<String> name_List =new ArrayList<String>();
ArrayList<String> path_List =new ArrayList<String>();
ArrayList<String> mmimage_List = new ArrayList<String>();
ArrayList<String> mname_List = new ArrayList<String>();
ArrayList<String> mmimage = new ArrayList<String>();
ArrayList<String> mvideo_List = new ArrayList<String>();
ArrayList<schild> model_List =new ArrayList<schild>();
ArrayList<String> mspec_List = new ArrayList<String>();
Spinner spinner_hltag,spinner_sltag, spinner_path;
ArrayAdapter<String> adapter_hltag;
ArrayAdapter<String> adapter_sltag;
ArrayAdapter<String> adapter_path;
int hltagPos=0;
int sltagPos=0;
Object sdcard;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
GridView sdcardImages = (GridView) findViewById(R.id.sdcard);
spinner_hltag= (Spinner) findViewById(R.id.spinner1);
spinner_sltag = (Spinner) findViewById(R.id.spinner2);
sdcardImages.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View v, int position, long id) {
Intent intent = new Intent(ParxmlActivity.this, tabview.class);
intent.putStringArrayListExtra("numbers", mspec_List);
//intent.putExtra("name",model_List.get(position).name);
startActivity(intent);
}
});
sdcardImages.setAdapter(new ImageAdapter(this));
String[] proj = {MediaStore.Images.Thumbnails._ID};
cursor = managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
proj, null, null, null);
columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID);
try {
/* Get a SAXParser from the SAXPArserFactory. */
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
/* Get the XMLReader of the SAXParser we created. */
XMLReader xr = sp.getXMLReader();
/* Create a new ContentHandler and apply it to the XML-Reader */
ExampleHandler myExampleHandler = new ExampleHandler();
xr.setContentHandler(myExampleHandler);
/* Parse the xml-data from our file. */
xr.parse(new InputSource(getAssets().open("mafile.xml")));
/* Parsing has finished. */
parsedExampleDataSet =myExampleHandler. myParsedExampleDataSet;
for (int i = 0; i < parsedExampleDataSet.gethltag().size(); i++) {
Log.v("gethltag SIZE ", ""+parsedExampleDataSet.gethltag().size());
hltag_List.add(parsedExampleDataSet.getHLTag().get(i));
}
sltag_List = parsedExampleDataSet.getSLTag(hltag_List.get(hltagPos));
for(int i = 0; i < sltag_List.size(); i++) {
name_List.add(sltag_List.get(i).name);
path_List.add(sltag_List.get(i).path);
}
model_List.clear();
model_List = sltag_List.get(sltagPos).model;
for(int j = 0; j<model_List.size(); j++){
mmimage_List.addAll(model_List.get(j).imageList);
mname_List.add(model_List.get(j).name);
mvideo_List.addAll(model_List.get(j).videoList);
mmimage.add(model_List.get(j).mimage);
mspec_List.add(model_List.get(j).spec);
}
spinner_hltag.setAdapter(new MyAdapter(ParxmlActivity.this, R.layout.row, hltag_List));
spinner_sltag.setAdapter(new MyAdapter1(ParxmlActivity.this, R.layout.row1,name_List));
} catch (Exception e) {
}
}
private class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return path_List.size();
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) { // if it's not recycled, initialize some attributes
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}
//Bitmap bitmap = BitmapFactory.decodeFile(path_List);
Bitmap bitmap = BitmapFactory.decodeFile(path_List.get(position));
imageView.setImageBitmap(bitmap);
return imageView;
}
}
public class MyAdapter extends ArrayAdapter<String>{
public MyAdapter(Context context, int textViewResourceId, ArrayList<String> hltagList) {
super(context, textViewResourceId, hltagList);
}
@Override
public View getDropDownView(int position, View convertView,ViewGroup parent) {
return getCustomView(position, convertView, parent);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
return getCustomView(position, convertView, parent);
}
public View getCustomView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater=getLayoutInflater();
View row=inflater.inflate(R.layout.row, parent, false);
TextView label=(TextView)row.findViewById(R.id.weekofday);
label.setText(hltag_List.get(position));
ImageView icon=(ImageView)row.findViewById(R.id.icon);
Bitmap bitmap = BitmapFactory.decodeFile(path_List.get(position));;
icon.setImageBitmap(bitmap);
return row;
}
}
public class MyAdapter1 extends ArrayAdapter<String>{
public MyAdapter1(Context context, int textViewResourceId, ArrayList<String> name_List) {
super(context, textViewResourceId, name_List);
}
@Override
public View getDropDownView(int position, View convertView,ViewGroup parent) {
return getCustomView(position, convertView, parent);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
return getCustomView(position, convertView, parent);
}
public View getCustomView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater=getLayoutInflater();
View row=inflater.inflate(R.layout.row, parent, false);
TextView sub=(TextView)row.findViewById(R.id.weekofday1);
sub.setText(name_List.get(position));
ImageView icon=(ImageView)row.findViewById(R.id.icon);
Bitmap bitmap = BitmapFactory.decodeFile(path_List.get(position));;
icon.setImageBitmap(bitmap);
return row;
}
}
}
请参阅上面的代码并看到以下行：1。sdcardImages.setOnItemClickListener 2. mspec_List数组列表然后这是我的标签布局源代码链接：1。http://paste.org/44196 2. http://paste.org/44195请帮助我
答案 0 :(得分：0)
除了这些原始数据类型之外，如果要传递某些类的整个arraylist，请使用Parcelable。
http://prasanta-paul.blogspot.com/2010/06/android-parcelable-example.html
答案 1 :(得分：0)
我不会将ArrayList传递给另一个活动，而只是对该列表的引用。可以将arrayList保存在单独的类中。通过为其实例使用静态方法和静态变量，您可以将数据保存在那里。
public class MyData{
static private MyData instanceOfMyData;
ArrayList<String> myStringList = new ArrayList<String>();
static synchronized public MyData getInstance() {
if (instanceOfMyData == null) instanceOfMyData = new MyData();
return instanceOfMyData;
}
static public ArrayList<?> getMyStringList(MyData instance){
return instance.myStringList;
}
}
然后在您的任何活动中，您可以通过两次调用访问ArrayList：
MyData myData = MyData.getInstance();
ArrayList<?> myStrings = MyData.getMyStringList(myData);
您可以使用参考myStrings查看，添加或删除此集合中的项目。