New orientation handling. Only impacts SDK (aapt dump badging).

This is a new way of determining whether an application requires
specific orientations, done by looking at any requirements in its
activity tags.  Note that this won't catch all possible issues,
because applications can still force an orientation through Java
APIs, but the vast majority of applications that actually require
a specific orientation should be doing it this way because it the
easiest way and the only way to cleanly launch into the app from
a different orientation without doing some serious activity tricks.

Change-Id: I11d32104f6bc3d2a72aeeff1ca150b8f1c9f5588

1 files changed, 48 insertions, 8 deletions

diff --git a/tools/aapt/Command.cpp b/tools/aapt/Command.cpp
index 223b1fa..7852197 100644
--- a/tools/aapt/Command.cpp
+++ b/tools/aapt/Command.cpp
@@ -291,6 +291,27 @@ static int32_t getIntegerAttribute(const ResXMLTree& tree, uint32_t attrRes,
     return value.data;
 }
 
+static int32_t getResolvedIntegerAttribute(const ResTable* resTable, const ResXMLTree& tree,
+        uint32_t attrRes, String8* outError, int32_t defValue = -1)
+{
+    ssize_t idx = indexOfAttribute(tree, attrRes);
+    if (idx < 0) {
+        return defValue;
+    }
+    Res_value value;
+    if (tree.getAttributeValue(idx, &value) != NO_ERROR) {
+        if (value.dataType == Res_value::TYPE_REFERENCE) {
+            resTable->resolveReference(&value, 0);
+        }
+        if (value.dataType < Res_value::TYPE_FIRST_INT
+                || value.dataType > Res_value::TYPE_LAST_INT) {
+            if (outError != NULL) *outError = "attribute is not an integer value";
+            return defValue;
+        }
+    }
+    return value.data;
+}
+
 static String8 getResolvedAttribute(const ResTable* resTable, const ResXMLTree& tree,
         uint32_t attrRes, String8* outError)
 {
@@ -320,11 +341,12 @@ static String8 getResolvedAttribute(const ResTable* resTable, const ResXMLTree&
 // These are attribute resource constants for the platform, as found
 // in android.R.attr
 enum {
+    LABEL_ATTR = 0x01010001,
+    ICON_ATTR = 0x01010002,
     NAME_ATTR = 0x01010003,
     VERSION_CODE_ATTR = 0x0101021b,
     VERSION_NAME_ATTR = 0x0101021c,
-    LABEL_ATTR = 0x01010001,
-    ICON_ATTR = 0x01010002,
+    SCREEN_ORIENTATION_ATTR = 0x0101001e,
     MIN_SDK_VERSION_ATTR = 0x0101020c,
     MAX_SDK_VERSION_ATTR = 0x01010271,
     REQ_TOUCH_SCREEN_ATTR = 0x01010227,
@@ -634,6 +656,8 @@ int doDump(Bundle* bundle)
             bool reqDistinctMultitouchFeature = false;
             bool specScreenPortraitFeature = false;
             bool specScreenLandscapeFeature = false;
+            bool reqScreenPortraitFeature = false;
+            bool reqScreenLandscapeFeature = false;
             // 2.2 also added some other features that apps can request, but that
             // have no corresponding permission, so we cannot implement any
             // back-compatibility heuristic for them. The below are thus unnecessary
@@ -1022,6 +1046,18 @@ int doDump(Bundle* bundle)
                             fprintf(stderr, "ERROR getting 'android:icon' attribute: %s\n", error.string());
                             goto bail;
                         }
+
+                        int32_t orien = getResolvedIntegerAttribute(&res, tree,
+                                SCREEN_ORIENTATION_ATTR, &error);
+                        if (error == "") {
+                            if (orien == 0 || orien == 6 || orien == 8) {
+                                // Requests landscape, sensorLandscape, or reverseLandscape.
+                                reqScreenLandscapeFeature = true;
+                            } else if (orien == 1 || orien == 7 || orien == 9) {
+                                // Requests portrait, sensorPortrait, or reversePortrait.
+                                reqScreenPortraitFeature = true;
+                            }
+                        }
                     } else if (tag == "uses-library") {
                         String8 libraryName = getAttribute(tree, NAME_ATTR, &error);
                         if (error != "") {
@@ -1182,12 +1218,16 @@ int doDump(Bundle* bundle)
             }
 
             // Landscape/portrait-related compatibility logic
-            if (!specScreenLandscapeFeature && !specScreenPortraitFeature && (targetSdk < 13)) {
-                // If app has not specified whether it requires portrait or landscape
-                // and is targeting an API before Honeycomb MR2, then assume it requires
-                // both.
-                printf("uses-feature:'android.hardware.screen.portrait'\n");
-                printf("uses-feature:'android.hardware.screen.landscape'\n");
+            if (!specScreenLandscapeFeature && !specScreenPortraitFeature) {
+                // If the app has specified any activities in its manifest
+                // that request a specific orientation, then assume that
+                // orientation is required.
+                if (reqScreenLandscapeFeature) {
+                    printf("uses-feature:'android.hardware.screen.landscape'\n");
+                }
+                if (reqScreenPortraitFeature) {
+                    printf("uses-feature:'android.hardware.screen.portrait'\n");
+                }
             }
 
             if (hasMainActivity) {