service.cpp里有对intent的处理
188 } else if (strcmp(argv[optind], "intent") == 0) { 189 190 char* action = NULL; 191 char* dataArg = NULL; 192 char* type = NULL; 193 int launchFlags = 0; 194 char* component = NULL; 195 int categoryCount = 0; 196 char* categories[16]; 197 198 char* context1 = NULL; 199 200 optind++; 201 202 while (optind < argc) 203 { 204 char* key = strtok_r(argv[optind], "=", &context1); 205 char* value = strtok_r(NULL, "=", &context1); 206 207 // we have reached the end of the XXX=XXX args. 208 if (key == NULL) break; 209 210 if (strcmp(key, "action") == 0) 211 { 212 action = value; 213 } 214 else if (strcmp(key, "data") == 0) 215 { 216 dataArg = value; 217 } 218 else if (strcmp(key, "type") == 0) 219 { 220 type = value; 221 } 222 else if (strcmp(key, "launchFlags") == 0) 223 { 224 launchFlags = atoi(value); 225 } 226 else if (strcmp(key, "component") == 0) 227 { 228 component = value; 229 } 230 else if (strcmp(key, "categories") == 0) 231 { 232 char* context2 = NULL; 233 int categoryCount = 0; 234 categories[categoryCount] = strtok_r(value, ",", &context2); 235 236 while (categories[categoryCount] != NULL) 237 { 238 categoryCount++; 239 categories[categoryCount] = strtok_r(NULL, ",", &context2); 240 } 241 } 242 243 optind++; 244 } 245 246 writeString16(data, action); 247 writeString16(data, dataArg); 248 writeString16(data, type); 249 data.writeInt32(launchFlags); 250 writeString16(data, component); 251 252 if (categoryCount > 0) 253 { 254 data.writeInt32(categoryCount); 255 for (int i = 0 ; i < categoryCount ; i++) 256 { 257 writeString16(data, categories[i]); 258 } 259 } 260 else 261 { 262 data.writeInt32(0); 263 } 264 265 // for now just set the extra field to be null. 266 data.writeInt32(-1); 267 } else { 268 aerr << "service: unknown option " << argv[optind] << endl; 269 wantsUsage = true; 270 result = 10; 271 break; 272 } 我们尝试进行调用， 准备使用service call 使用如下调用功能 Intent mainIntent = new Intent(Intent.ACTION_MAIN, null); mainIntent.addCategory(Intent.CATEGORY_LAUNCHER); getPackageManager().queryIntentActivities(mainIntent, 0);$ service call package 42 intent action=android.intent.action.MAIN cat egories=android.intent.category.LAUNCHER i32 0 i32 0 Result: Parcel( 0x00000000: fffffffd 00000019 006e0055 006e006b '........U.n.k.n.' 0x00000010: 0077006f 0020006e 00520055 00200049 'o.w.n. .U.R.I. .' 0x00000020: 00790074 00650070 0020003a 00340037 't.y.p.e.:. .7.4.' 0x00000030: 00310037 00300032 00000034 '7.1.2.0.4... ') 出错了 log 01-09 02:52:17.500 1075-1980/? W/System.err: java.lang.IllegalArgumentException: Unknown URI type: 7471204 01-09 02:52:17.501 1075-1980/? W/System.err: at android.net.Uri$1.createFromParcel(Uri.java:1779) 01-09 02:52:17.501 1075-1980/? W/System.err: at android.net.Uri$1.createFromParcel(Uri.java:1769) 01-09 02:52:17.501 1075-1980/? W/System.err: at android.content.Intent.readFromParcel(Intent.java:8680) 01-09 02:52:17.501 1075-1980/? W/System.err: at android.content.Intent.<init>(Intent.java:8675) 01-09 02:52:17.501 1075-1980/? W/System.err: at android.content.Intent$1.createFromParcel(Intent.java:8666) 01-09 02:52:17.501 1075-1980/? W/System.err: at android.content.Intent$1.createFromParcel(Intent.java:8665) 01-09 02:52:17.501 1075-1980/? W/System.err: at android.content.pm.IPackageManager$Stub.onTransact(IPackageManager.java:662) 01-09 02:52:17.501 1075-1980/? W/System.err: at com.android.server.pm.PackageManagerService.onTransact(PackageManagerService.java:3732) 01-09 02:52:17.501 1075-1980/? W/System.err: at android.os.Binder.execTransact(Binder.java:577)
查看
Intent.java public static final Parcelable.Creator<Intent> CREATOR = new Parcelable.Creator<Intent>() { public Intent createFromParcel(Parcel in) { return new Intent(in); } public Intent[] newArray(int size) { return new Intent[size]; } }; /** @hide */ protected Intent(Parcel in) { readFromParcel(in); } public void readFromParcel(Parcel in) { setAction(in.readString()); mData = Uri.CREATOR.createFromParcel(in); mType = in.readString(); mFlags = in.readInt(); mPackage = in.readString(); mComponent = ComponentName.readFromParcel(in); if (in.readInt() != 0) { mSourceBounds = Rect.CREATOR.createFromParcel(in); } int N = in.readInt(); if (N > 0) { mCategories = new ArraySet<String>(); int i; for (i=0; i<N; i++) { mCategories.add(in.readString().intern()); } } else { mCategories = null; } if (in.readInt() != 0) { mSelector = new Intent(in); } if (in.readInt() != 0) { mClipData = new ClipData(in); } mContentUserHint = in.readInt(); mExtras = in.readBundle(); } Uri.java public static final Parcelable.Creator<Uri> CREATOR = new Parcelable.Creator<Uri>() { public Uri createFromParcel(Parcel in) { int type = in.readInt(); switch (type) { case NULL_TYPE_ID: return null; case StringUri.TYPE_ID: return StringUri.readFrom(in); case OpaqueUri.TYPE_ID: return OpaqueUri.readFrom(in); case HierarchicalUri.TYPE_ID: return HierarchicalUri.readFrom(in); } throw new IllegalArgumentException("Unknown URI type: " + type); } public Uri[] newArray(int size) { return new Uri[size]; } }; service.cpp里写parcel数据没有按照intent标准去写导致的问题， 我们按照intent的格式去写数据就可以。但是这样的调用还是显得比较繁琐，没有直接在应用层调用方便。 附，IPackageManager.java里的处理 @Override public android.content.pm.ParceledListSlice queryIntentActivities(android.content.Intent intent, java.lang.String resolvedType, int flags, int userId) throws android.os.RemoteException { android.os.Parcel _data = android.os.Parcel.obtain(); android.os.Parcel _reply = android.os.Parcel.obtain(); android.content.pm.ParceledListSlice _result; try { _data.writeInterfaceToken(DESCRIPTOR); if ((intent!=null)) { _data.writeInt(1); intent.writeToParcel(_data, 0); } else { _data.writeInt(0); } _data.writeString(resolvedType); _data.writeInt(flags); _data.writeInt(userId); mRemote.transact(Stub.TRANSACTION_queryIntentActivities, _data, _reply, 0); _reply.readException(); if ((0!=_reply.readInt())) { _result = android.content.pm.ParceledListSlice.CREATOR.createFromParcel(_reply); } else { _result = null; } } finally { _reply.recycle(); _data.recycle(); } return _result; } static final int TRANSACTION_queryIntentActivities = (android.os.IBinder.FIRST_CALL_TRANSACTION + 41); case TRANSACTION_queryIntentActivities: { data.enforceInterface(DESCRIPTOR); android.content.Intent _arg0; if ((0!=data.readInt())) { _arg0 = android.content.Intent.CREATOR.createFromParcel(data); } else { _arg0 = null; } java.lang.String _arg1; _arg1 = data.readString(); int _arg2; _arg2 = data.readInt(); int _arg3; _arg3 = data.readInt(); android.content.pm.ParceledListSlice _result = this.queryIntentActivities(_arg0, _arg1, _arg2, _arg3); reply.writeNoException(); if ((_result!=null)) { reply.writeInt(1); _result.writeToParcel(reply, android.os.Parcelable.PARCELABLE_WRITE_RETURN_VALUE); } else { reply.writeInt(0); } return true; } 获取intent数据出错 _arg0 = android.content.Intent.CREATOR.createFromParcel(data);@Override public android.content.pm.ParceledListSlice queryIntentActivities(android.content.Intent intent, java.lang.String resolvedType, int flags, int userId) throws android.os.RemoteException
{ android.os.Parcel _data = android.os.Parcel.obtain(); android.os.Parcel _reply = android.os.Parcel.obtain(); android.content.pm.ParceledListSlice _result; try { _data.writeInterfaceToken(DESCRIPTOR); if ((intent!=null)) { _data.writeInt(1); intent.writeToParcel(_data, 0); } else { _data.writeInt(0); } _data.writeString(resolvedType); _data.writeInt(flags); _data.writeInt(userId); mRemote.transact(Stub.TRANSACTION_queryIntentActivities, _data, _reply, 0); _reply.readException(); if ((0!=_reply.readInt())) { _result = android.content.pm.ParceledListSlice.CREATOR.createFromParcel(_reply); } else { _result = null; } } finally { _reply.recycle(); _data.recycle(); } return _result; } static final int TRANSACTION_queryIntentActivities = (android.os.IBinder.FIRST_CALL_TRANSACTION + 41); case TRANSACTION_queryIntentActivities: { data.enforceInterface(DESCRIPTOR); android.content.Intent _arg0; if ((0!=data.readInt())) { _arg0 = android.content.Intent.CREATOR.createFromParcel(data); } else { _arg0 = null; } java.lang.String _arg1; _arg1 = data.readString(); int _arg2; _arg2 = data.readInt(); int _arg3; _arg3 = data.readInt(); android.content.pm.ParceledListSlice _result = this.queryIntentActivities(_arg0, _arg1, _arg2, _arg3); reply.writeNoException(); if ((_result!=null)) { reply.writeInt(1); _result.writeToParcel(reply, android.os.Parcelable.PARCELABLE_WRITE_RETURN_VALUE); } else { reply.writeInt(0); } return true; } 获取intent数据出错 _arg0 = android.content.Intent.CREATOR.createFromParcel(data);