LayoutInflater.inflate方法解析

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public View inflate(XmlPullParser parser, ViewGroup root, boolean attachToRoot) {    synchronized (mConstructorArgs) {        Trace.traceBegin(Trace.TRACE_TAG_VIEW, "inflate");        final AttributeSet attrs = Xml.asAttributeSet(parser);        Context lastContext = (Context)mConstructorArgs[0];        mConstructorArgs[0] = mContext;        View result = root;        try {            // Look for the root node.            int type;            while ((type = parser.next()) != XmlPullParser.START_TAG &&                    type != XmlPullParser.END_DOCUMENT) {                // Empty            }            if (type != XmlPullParser.START_TAG) {                throw new InflateException(parser.getPositionDescription()                        + ": No start tag found!");            }            final String name = parser.getName();                        if (DEBUG) {                System.out.println("**************************");                System.out.println("Creating root view: "                        + name);                System.out.println("**************************");            }            if (TAG_MERGE.equals(name)) {                if (root == null || !attachToRoot) {                    throw new InflateException("<merge /> can be used only with a valid "                            + "ViewGroup root and attachToRoot=true");                }                rInflate(parser, root, attrs, false);            } else {                // Temp is the root view that was found in the xml                View temp;                if (TAG_1995.equals(name)) {                    temp = new BlinkLayout(mContext, attrs);                } else {                    temp = createViewFromTag(root, name, attrs);                }                ViewGroup.LayoutParams params = null;                if (root != null) {                    if (DEBUG) {                        System.out.println("Creating params from root: " +                                root);                    }                    // Create layout params that match root, if supplied                    params = root.generateLayoutParams(attrs);                    if (!attachToRoot) {                        // Set the layout params for temp if we are not                        // attaching. (If we are, we use addView, below)                        temp.setLayoutParams(params);                    }                }                if (DEBUG) {                    System.out.println("-----> start inflating children");                }                // Inflate all children under temp                rInflate(parser, temp, attrs, true);                if (DEBUG) {                    System.out.println("-----> done inflating children");                }                // We are supposed to attach all the views we found (int temp)                // to root. Do that now.                if (root != null && attachToRoot) {                    root.addView(temp, params);                }                // Decide whether to return the root that was passed in or the                // top view found in xml.                if (root == null || !attachToRoot) {                    result = temp;                }            }        } catch (XmlPullParserException e) {            InflateException ex = new InflateException(e.getMessage());            ex.initCause(e);            throw ex;        } catch (IOException e) {            InflateException ex = new InflateException(                    parser.getPositionDescription()                    + ": " + e.getMessage());            ex.initCause(e);            throw ex;        } finally {            // Don't retain static reference on context.            mConstructorArgs[0] = lastContext;            mConstructorArgs[1] = null;        }        Trace.traceEnd(Trace.TRACE_TAG_VIEW);        return result;    }}