BridgeInflaterpublic final class BridgeInflater extends LayoutInflater | Custom implementation of {@link LayoutInflater} to handle custom views. |
| Fields Summary |
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| private final com.android.ide.common.rendering.api.IProjectCallback | mProjectCallback | | private boolean | mIsInMerge | | private com.android.ide.common.rendering.api.ResourceReference | mResourceReference | | private static final String[] | sClassPrefixListList of class prefixes which are tried first by default.
This should match the list in com.android.internal.policy.impl.PhoneLayoutInflater. |
| Methods Summary |
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| public LayoutInflater | cloneInContext(android.content.Context newContext)
return new BridgeInflater(this, newContext);
| | public View | createViewFromTag(View parent, java.lang.String name, android.util.AttributeSet attrs, boolean inheritContext)
View view = null;
try {
view = super.createViewFromTag(parent, name, attrs, inheritContext);
} catch (InflateException e) {
// try to load the class from using the custom view loader
try {
view = loadCustomView(name, attrs);
} catch (Exception e2) {
// Wrap the real exception in an InflateException so that the calling
// method can deal with it.
InflateException exception = new InflateException();
if (e2.getClass().equals(ClassNotFoundException.class) == false) {
exception.initCause(e2);
} else {
exception.initCause(e);
}
throw exception;
}
}
setupViewInContext(view, attrs);
return view;
| | static java.lang.Object | getViewKeyFromParser(android.util.AttributeSet attrs, com.android.layoutlib.bridge.android.BridgeContext bc, com.android.ide.common.rendering.api.ResourceReference resourceReference, boolean isInMerge)
if (!(attrs instanceof BridgeXmlBlockParser)) {
return null;
}
BridgeXmlBlockParser parser = ((BridgeXmlBlockParser) attrs);
// get the view key
Object viewKey = parser.getViewCookie();
if (viewKey == null) {
int currentDepth = parser.getDepth();
// test whether we are in an included file or in a adapter binding view.
BridgeXmlBlockParser previousParser = bc.getPreviousParser();
if (previousParser != null) {
// looks like we are inside an embedded layout.
// only apply the cookie of the calling node (<include>) if we are at the
// top level of the embedded layout. If there is a merge tag, then
// skip it and look for the 2nd level
int testDepth = isInMerge ? 2 : 1;
if (currentDepth == testDepth) {
viewKey = previousParser.getViewCookie();
// if we are in a merge, wrap the cookie in a MergeCookie.
if (viewKey != null && isInMerge) {
viewKey = new MergeCookie(viewKey);
}
}
} else if (resourceReference != null && currentDepth == 1) {
// else if there's a resource reference, this means we are in an adapter
// binding case. Set the resource ref as the view cookie only for the top
// level view.
viewKey = resourceReference;
}
}
return viewKey;
| | public View | inflate(int resource, ViewGroup root)
Context context = getContext();
while (context instanceof ContextThemeWrapper) {
context = ((ContextThemeWrapper) context).getBaseContext();
}
if (context instanceof BridgeContext) {
BridgeContext bridgeContext = (BridgeContext)context;
ResourceValue value = null;
Pair<ResourceType, String> layoutInfo = Bridge.resolveResourceId(resource);
if (layoutInfo != null) {
value = bridgeContext.getRenderResources().getFrameworkResource(
ResourceType.LAYOUT, layoutInfo.getSecond());
} else {
layoutInfo = mProjectCallback.resolveResourceId(resource);
if (layoutInfo != null) {
value = bridgeContext.getRenderResources().getProjectResource(
ResourceType.LAYOUT, layoutInfo.getSecond());
}
}
if (value != null) {
File f = new File(value.getValue());
if (f.isFile()) {
try {
XmlPullParser parser = ParserFactory.create(f);
BridgeXmlBlockParser bridgeParser = new BridgeXmlBlockParser(
parser, bridgeContext, false);
return inflate(bridgeParser, root);
} catch (Exception e) {
Bridge.getLog().error(LayoutLog.TAG_RESOURCES_READ,
"Failed to parse file " + f.getAbsolutePath(), e, null /*data*/);
return null;
}
}
}
}
return null;
| | private View | loadCustomView(java.lang.String name, android.util.AttributeSet attrs)
if (mProjectCallback != null) {
// first get the classname in case it's not the node name
if (name.equals("view")) {
name = attrs.getAttributeValue(null, "class");
}
mConstructorArgs[1] = attrs;
Object customView = mProjectCallback.loadView(name, mConstructorSignature,
mConstructorArgs);
if (customView instanceof View) {
return (View)customView;
}
}
return null;
| | public View | onCreateView(java.lang.String name, android.util.AttributeSet attrs)
View view = null;
try {
// First try to find a class using the default Android prefixes
for (String prefix : sClassPrefixList) {
try {
view = createView(name, prefix, attrs);
if (view != null) {
break;
}
} catch (ClassNotFoundException e) {
// Ignore. We'll try again using the base class below.
}
}
// Next try using the parent loader. This will most likely only work for
// fully-qualified class names.
try {
if (view == null) {
view = super.onCreateView(name, attrs);
}
} catch (ClassNotFoundException e) {
// Ignore. We'll try again using the custom view loader below.
}
// Finally try again using the custom view loader
try {
if (view == null) {
view = loadCustomView(name, attrs);
}
} catch (ClassNotFoundException e) {
// If the class was not found, we throw the exception directly, because this
// method is already expected to throw it.
throw e;
}
} catch (Exception e) {
// Wrap the real exception in a ClassNotFoundException, so that the calling method
// can deal with it.
ClassNotFoundException exception = new ClassNotFoundException("onCreateView", e);
throw exception;
}
setupViewInContext(view, attrs);
return view;
| | public void | setIsInMerge(boolean isInMerge)
mIsInMerge = isInMerge;
| | public void | setResourceReference(com.android.ide.common.rendering.api.ResourceReference reference)
mResourceReference = reference;
| | private void | setupViewInContext(View view, android.util.AttributeSet attrs)
Context context = getContext();
while (context instanceof ContextThemeWrapper) {
context = ((ContextThemeWrapper) context).getBaseContext();
}
if (context instanceof BridgeContext) {
BridgeContext bc = (BridgeContext) context;
// get the view key
Object viewKey = getViewKeyFromParser(attrs, bc, mResourceReference, mIsInMerge);
if (viewKey != null) {
bc.addViewKey(view, viewKey);
}
}
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