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-rw-r--r--android/view/BridgeInflater.java204
1 files changed, 130 insertions, 74 deletions
diff --git a/android/view/BridgeInflater.java b/android/view/BridgeInflater.java
index 58d8c527..84fd0edd 100644
--- a/android/view/BridgeInflater.java
+++ b/android/view/BridgeInflater.java
@@ -31,6 +31,8 @@ import com.android.layoutlib.bridge.android.support.RecyclerViewUtil;
import com.android.layoutlib.bridge.impl.ParserFactory;
import com.android.layoutlib.bridge.util.ReflectionUtils;
import com.android.resources.ResourceType;
+import com.android.tools.layoutlib.annotations.NotNull;
+import com.android.tools.layoutlib.annotations.Nullable;
import com.android.util.Pair;
import org.xmlpull.v1.XmlPullParser;
@@ -45,25 +47,13 @@ import android.widget.ImageView;
import android.widget.NumberPicker;
import java.io.File;
-import java.util.Arrays;
-import java.util.Collections;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
import java.util.HashMap;
-import java.util.HashSet;
import java.util.Map;
-import java.util.Set;
-
-import static com.android.SdkConstants.AUTO_COMPLETE_TEXT_VIEW;
-import static com.android.SdkConstants.BUTTON;
-import static com.android.SdkConstants.CHECKED_TEXT_VIEW;
-import static com.android.SdkConstants.CHECK_BOX;
-import static com.android.SdkConstants.EDIT_TEXT;
-import static com.android.SdkConstants.IMAGE_BUTTON;
-import static com.android.SdkConstants.IMAGE_VIEW;
-import static com.android.SdkConstants.MULTI_AUTO_COMPLETE_TEXT_VIEW;
-import static com.android.SdkConstants.RADIO_BUTTON;
-import static com.android.SdkConstants.SEEK_BAR;
-import static com.android.SdkConstants.SPINNER;
-import static com.android.SdkConstants.TEXT_VIEW;
+import java.util.function.BiFunction;
+
import static com.android.layoutlib.bridge.android.BridgeContext.getBaseContext;
/**
@@ -72,21 +62,7 @@ import static com.android.layoutlib.bridge.android.BridgeContext.getBaseContext;
public final class BridgeInflater extends LayoutInflater {
private final LayoutlibCallback mLayoutlibCallback;
- /**
- * If true, the inflater will try to replace the framework widgets with the AppCompat versions.
- * Ideally, this should be based on the activity being an AppCompat activity but since that is
- * not trivial to check from layoutlib, we currently base the decision on the current theme
- * being an AppCompat theme.
- */
- private boolean mLoadAppCompatViews;
- /**
- * This set contains the framework views that have an AppCompat version but failed to load.
- * This might happen because not all widgets are contained in all versions of the support
- * library.
- * This will help us to avoid trying to load the AppCompat version multiple times if it
- * doesn't exist.
- */
- private Set<String> mFailedAppCompatViews = new HashSet<>();
+
private boolean mIsInMerge = false;
private ResourceReference mResourceReference;
private Map<View, String> mOpenDrawerLayouts;
@@ -94,15 +70,6 @@ public final class BridgeInflater extends LayoutInflater {
// Keep in sync with the same value in LayoutInflater.
private static final int[] ATTRS_THEME = new int[] {com.android.internal.R.attr.theme };
- private static final String APPCOMPAT_WIDGET_PREFIX = "android.support.v7.widget.AppCompat";
- /** List of platform widgets that have an AppCompat version */
- private static final Set<String> APPCOMPAT_VIEWS = Collections.unmodifiableSet(
- new HashSet<>(
- Arrays.asList(TEXT_VIEW, IMAGE_VIEW, BUTTON, EDIT_TEXT, SPINNER,
- IMAGE_BUTTON, CHECK_BOX, RADIO_BUTTON, CHECKED_TEXT_VIEW,
- AUTO_COMPLETE_TEXT_VIEW, MULTI_AUTO_COMPLETE_TEXT_VIEW, "RatingBar",
- SEEK_BAR)));
-
/**
* List of class prefixes which are tried first by default.
* <p/>
@@ -113,6 +80,7 @@ public final class BridgeInflater extends LayoutInflater {
"android.webkit.",
"android.app."
};
+ private BiFunction<String, AttributeSet, View> mCustomInflater;
public static String[] getClassPrefixList() {
return sClassPrefixList;
@@ -121,13 +89,9 @@ public final class BridgeInflater extends LayoutInflater {
private BridgeInflater(LayoutInflater original, Context newContext) {
super(original, newContext);
newContext = getBaseContext(newContext);
- if (newContext instanceof BridgeContext) {
- mLayoutlibCallback = ((BridgeContext) newContext).getLayoutlibCallback();
- mLoadAppCompatViews = ((BridgeContext) newContext).isAppCompatTheme();
- } else {
- mLayoutlibCallback = null;
- mLoadAppCompatViews = false;
- }
+ mLayoutlibCallback = (newContext instanceof BridgeContext) ?
+ ((BridgeContext) newContext).getLayoutlibCallback() :
+ null;
}
/**
@@ -140,26 +104,14 @@ public final class BridgeInflater extends LayoutInflater {
super(context);
mLayoutlibCallback = layoutlibCallback;
mConstructorArgs[0] = context;
- mLoadAppCompatViews = context.isAppCompatTheme();
}
@Override
public View onCreateView(String name, AttributeSet attrs) throws ClassNotFoundException {
- View view = null;
-
- try {
- if (mLoadAppCompatViews
- && APPCOMPAT_VIEWS.contains(name)
- && !mFailedAppCompatViews.contains(name)) {
- // We are using an AppCompat theme so try to load the appcompat views
- view = loadCustomView(APPCOMPAT_WIDGET_PREFIX + name, attrs, true);
+ View view = createViewFromCustomInflater(name, attrs);
- if (view == null) {
- mFailedAppCompatViews.add(name); // Do not try this one anymore
- }
- }
-
- if (view == null) {
+ if (view == null) {
+ try {
// First try to find a class using the default Android prefixes
for (String prefix : sClassPrefixList) {
try {
@@ -181,19 +133,19 @@ public final class BridgeInflater extends LayoutInflater {
} catch (ClassNotFoundException e) {
// Ignore. We'll try again using the custom view loader below.
}
- }
- // Finally try again using the custom view loader
- if (view == null) {
- view = loadCustomView(name, attrs);
+ // Finally try again using the custom view loader
+ if (view == null) {
+ view = loadCustomView(name, attrs);
+ }
+ } catch (InflateException e) {
+ // Don't catch the InflateException below as that results in hiding the real cause.
+ throw e;
+ } catch (Exception e) {
+ // Wrap the real exception in a ClassNotFoundException, so that the calling method
+ // can deal with it.
+ throw new ClassNotFoundException("onCreateView", e);
}
- } catch (InflateException e) {
- // Don't catch the InflateException below as that results in hiding the real cause.
- throw e;
- } catch (Exception e) {
- // Wrap the real exception in a ClassNotFoundException, so that the calling method
- // can deal with it.
- throw new ClassNotFoundException("onCreateView", e);
}
setupViewInContext(view, attrs);
@@ -201,6 +153,110 @@ public final class BridgeInflater extends LayoutInflater {
return view;
}
+ /**
+ * Finds the createView method in the given customInflaterClass. Since createView is
+ * currently package protected, it will show in the declared class so we iterate up the
+ * hierarchy and return the first instance we find.
+ * The returned method will be accessible.
+ */
+ @NotNull
+ private static Method getCreateViewMethod(Class<?> customInflaterClass) throws NoSuchMethodException {
+ Class<?> current = customInflaterClass;
+ do {
+ try {
+ Method method = current.getDeclaredMethod("createView", View.class, String.class,
+ Context.class, AttributeSet.class, boolean.class, boolean.class,
+ boolean.class, boolean.class);
+ method.setAccessible(true);
+ return method;
+ } catch (NoSuchMethodException ignore) {
+ }
+ current = current.getSuperclass();
+ } while (current != null && current != Object.class);
+
+ throw new NoSuchMethodException();
+ }
+
+ /**
+ * Finds the custom inflater class. If it's defined in the theme, we'll use that one (if the
+ * class does not exist, null is returned).
+ * If {@code viewInflaterClass} is not defined in the theme, we'll try to instantiate
+ * {@code android.support.v7.app.AppCompatViewInflater}
+ */
+ @Nullable
+ private static Class<?> findCustomInflater(@NotNull BridgeContext bc,
+ @NotNull LayoutlibCallback layoutlibCallback) {
+ ResourceValue value = bc.getRenderResources().findItemInTheme("viewInflaterClass", false);
+ String inflaterName = value != null ? value.getValue() : null;
+
+ if (inflaterName != null) {
+ try {
+ return layoutlibCallback.findClass(inflaterName);
+ } catch (ClassNotFoundException ignore) {
+ }
+
+ // viewInflaterClass was defined but we couldn't find the class
+ } else if (bc.isAppCompatTheme()) {
+ // Older versions of AppCompat do not define the viewInflaterClass so try to get it
+ // manually
+ try {
+ return layoutlibCallback.findClass("android.support.v7.app.AppCompatViewInflater");
+ } catch (ClassNotFoundException ignore) {
+ }
+ }
+
+ return null;
+ }
+
+ /**
+ * Checks if there is a custom inflater and, when present, tries to instantiate the view
+ * using it.
+ */
+ @Nullable
+ private View createViewFromCustomInflater(@NotNull String name, @NotNull AttributeSet attrs) {
+ if (mCustomInflater == null) {
+ Context context = getContext();
+ context = getBaseContext(context);
+ if (context instanceof BridgeContext) {
+ BridgeContext bc = (BridgeContext) context;
+ Class<?> inflaterClass = findCustomInflater(bc, mLayoutlibCallback);
+
+ if (inflaterClass != null) {
+ try {
+ Constructor<?> constructor = inflaterClass.getDeclaredConstructor();
+ constructor.setAccessible(true);
+ Object inflater = constructor.newInstance();
+ Method method = getCreateViewMethod(inflaterClass);
+ Context finalContext = context;
+ mCustomInflater = (viewName, attributeSet) -> {
+ try {
+ return (View) method.invoke(inflater, null, viewName, finalContext,
+ attributeSet,
+ false,
+ false /*readAndroidTheme*/, // No need after L
+ true /*readAppTheme*/,
+ true /*wrapContext*/);
+ } catch (IllegalAccessException | InvocationTargetException e) {
+ assert false : "Call to createView failed";
+ }
+ return null;
+ };
+ } catch (InvocationTargetException | IllegalAccessException |
+ NoSuchMethodException | InstantiationException ignore) {
+ }
+ }
+ }
+
+ if (mCustomInflater == null) {
+ // There is no custom inflater. We'll create a nop custom inflater to avoid the
+ // penalty of trying to instantiate again
+ mCustomInflater = (s, attributeSet) -> null;
+ }
+ }
+
+ return mCustomInflater.apply(name, attrs);
+ }
+
@Override
public View createViewFromTag(View parent, String name, Context context, AttributeSet attrs,
boolean ignoreThemeAttr) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-10 13:55:42 +0000