ListView Display

How can adapter display the content of the listview.

1.AbsListView.java

    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {      .......      final View child = obtainView(0, mIsScrap);      .....    }

//one item, called one time.
2.AbsListView.java

    View obtainView(int position, boolean[] isScrap) {....child = mAdapter.getView(position, scrapView, this);....}

3.CursorAdapter.java

    public View getView(int position, View convertView, ViewGroup parent) {        .....        if (convertView == null) {            v = newView(mContext, mCursor, parent);        } else {            v = convertView;        }        bindView(v, mContext, mCursor);        return v;    }

4.CursorAdapter.java

    public abstract void bindView(View view, Context context, Cursor cursor);

    public abstract View newView(Context context, Cursor cursor, ViewGroup parent);

//so override the the bindView and newView. and we just need the return the item view not the listview. 

all adapters getView

   View getView(int position, View convertView, ViewGroup parent);

so for what adapter, we just need to return one item's view.

file to url

    public static Uri fromFile(File file) {        if (file == null) {            throw new NullPointerException("file");        }        PathPart path = PathPart.fromDecoded(file.getAbsolutePath());        return new HierarchicalUri(                "file", Part.EMPTY, path, Part.NULL, Part.NULL);    }