android.content.Intent#getComponent ( )源码实例Demo

@Test
public void startAsViewClickEdit() throws Exception
{
    ActivityController activityController = setupActivity("budget", "", true, false);
    Activity activity = (Activity)activityController.get();

    shadowOf(activity).clickMenuItem(R.id.action_edit);

    ShadowActivity shadowActivity = shadowOf(activity);
    Intent startedIntent = shadowActivity.getNextStartedActivity();

    ComponentName name = startedIntent.getComponent();
    assertNotNull(name);
    assertEquals("protect.budgetwatch/.TransactionViewActivity", name.flattenToShortString());
    Bundle bundle = startedIntent.getExtras();
    assertNotNull(bundle);

    assertEquals(DBHelper.TransactionDbIds.EXPENSE, bundle.getInt("type", -1));
    assertEquals(1, bundle.getInt("id", -1));
    assertEquals(true, bundle.getBoolean("update", false));
    assertEquals(false, bundle.getBoolean("view", false));
}
 

/**
 * Given an AppTask retrieves the task class name.
 * @param task The app task to use.
 * @param pm The package manager to use for resolving intent.
 * @return Fully qualified class name or null if we were not able to
 * determine it.
 */
public static String getTaskClassName(AppTask task, PackageManager pm) {
    RecentTaskInfo info = getTaskInfoFromTask(task);
    if (info == null) return null;

    Intent baseIntent = info.baseIntent;
    if (baseIntent == null) {
        return null;
    } else if (baseIntent.getComponent() != null) {
        return baseIntent.getComponent().getClassName();
    } else {
        ResolveInfo resolveInfo = pm.resolveActivity(baseIntent, 0);
        if (resolveInfo == null) return null;
        return resolveInfo.activityInfo.name;
    }
}
 

@SuppressWarnings("ConstantConditions")
@Override
protected void handleInternal(@NonNull UriRequest request, @NonNull UriCallback callback) {
    // 创建Intent
    Intent intent = createIntent(request);
    if (intent == null || intent.getComponent() == null) {
        Debugger.fatal("AbsActivityHandler.createIntent()应返回的带有ClassName的显式跳转Intent");
        callback.onComplete(UriResult.CODE_ERROR);
        return;
    }
    intent.setData(request.getUri());
    UriSourceTools.setIntentSource(intent, request);
    // 启动Activity
    request.putFieldIfAbsent(ActivityLauncher.FIELD_LIMIT_PACKAGE, limitPackage());
    int resultCode = RouterComponents.startActivity(request, intent);
    // 回调方法
    onActivityStartComplete(request, resultCode);
    // 完成
    callback.onComplete(resultCode);
}
 

/**
 * 将Notification的Intent转换成用广播传递的Intent
 * <p>
 * 主要用于自定义Notification时处理点击打开Activity的事件，使用此方法
 * 将会在应用启动时直接打开目标Activity，应用未启动时先启动应用再打开Activity
 * </p>
 * */
public static PendingIntent getBroadcastIntent(Context context, Intent targetActivityIntent) {
    Intent broadcastIntent = new Intent(context, NotificationReceiver.class);
    Bundle bundle = new Bundle();
    if (targetActivityIntent.getExtras() != null) {
        bundle.putAll(targetActivityIntent.getExtras());
    }
    if (targetActivityIntent.getComponent() != null) {
        bundle.putString(KEY_TARGET_ACTIVITY_NAME,
                targetActivityIntent.getComponent().getClassName());
    }
    broadcastIntent.putExtra(NotificationManager.KEY_NOTIFICATION_EXTRA, bundle);
    return PendingIntent.getBroadcast(context, 0, broadcastIntent, PendingIntent.FLAG_UPDATE_CURRENT);
}
 

@Override
public Drawable getActivityBanner(Intent intent)
        throws NameNotFoundException {
    if (intent.getComponent() != null) {
        return getActivityBanner(intent.getComponent());
    }

    ResolveInfo info = resolveActivity(
            intent, PackageManager.MATCH_DEFAULT_ONLY);
    if (info != null) {
        return info.activityInfo.loadBanner(this);
    }

    throw new NameNotFoundException(intent.toUri(0));
}
 

public int stopService(IApplicationThread caller, Intent service,
                       String resolvedType, int userId) {

    if (service.getComponent() != null && ProxyEnvironment.hasInstance(service.getComponent().getPackageName())) {
        return ServiceProxy.stopServiceExternal(service.getComponent());
    } else {
        return mTarget.stopService(caller, service, resolvedType, userId);
    }
}
 

/**
 * 获取目标类型，activity or service or broadcast
 * @param intent
 * @return
 */
public static int getTargetType(Intent intent) {

	Iterator<PluginDescriptor> itr = getPlugins().iterator();

	while (itr.hasNext()) {
		PluginDescriptor plugin = itr.next();
		// 如果是通过组件进行匹配的
		if (intent.getComponent() != null) {
			if (plugin.containsName(intent.getComponent().getClassName())) {
				return plugin.getType(intent.getComponent().getClassName());
			}
		} else {
			String clazzName = findClassNameByIntent(intent, plugin.getActivitys());

			if (clazzName == null) {
				clazzName = findClassNameByIntent(intent, plugin.getServices());
			}

			if (clazzName == null) {
				clazzName = findClassNameByIntent(intent, plugin.getReceivers());
			}

			if (clazzName != null) {
				return plugin.getType(clazzName);
			}
		}
	}
	return PluginDescriptor.UNKOWN;
}
 

private void wrapIntent(Intent intent) {
    ComponentName component = intent.getComponent();
    String realClazz;
    if (component == null) {
        // Try to resolve the implicit action which has registered in host.
        component = intent.resolveActivity(Small.getContext().getPackageManager());
        if (component != null) {
            // A system or host action, nothing to be done.
            return;
        }

        // Try to resolve the implicit action which has registered in bundles.
        realClazz = resolveActivity(intent);
        if (realClazz == null) {
            // Cannot resolved, nothing to be done.
            return;
        }
    } else {
        realClazz = component.getClassName();
        if (realClazz.startsWith(STUB_ACTIVITY_PREFIX)) {
            // Re-wrap to ensure the launch mode works.
            realClazz = unwrapIntent(intent);
        }
    }

    if (sLoadedActivities == null) return;

    ActivityInfo ai = sLoadedActivities.get(realClazz);
    if (ai == null) return;

    // Carry the real(plugin) class for incoming `newActivity' method.
    intent.addCategory(REDIRECT_FLAG + realClazz);
    String stubClazz = dequeueStubActivity(ai, realClazz);
    intent.setComponent(new ComponentName(Small.getContext(), stubClazz));
}
 

@Override
public Drawable getActivityBanner(Intent intent)
        throws NameNotFoundException {
    if (intent.getComponent() != null) {
        return getActivityBanner(intent.getComponent());
    }

    ResolveInfo info = resolveActivity(
            intent, PackageManager.MATCH_DEFAULT_ONLY);
    if (info != null) {
        return info.activityInfo.loadBanner(this);
    }

    throw new NameNotFoundException(intent.toUri(0));
}
 

@Override public void setIntent(final Intent intent) {
	final ComponentName component = intent.getComponent();
	if (component != null && PACKAGE_PLACEHOLDER_SELF.equals(component.getPackageName())) {
		if (component.getClassName().isEmpty()) intent.setPackage(getContext().getPackageName()).setComponent(null);
		else intent.setComponent(new ComponentName(getContext().getPackageName(), component.getClassName()));
	}
	super.setIntent(intent);
}
 

@Override
public Drawable getActivityLogo(Intent intent)
        throws NameNotFoundException {
    if (intent.getComponent() != null) {
        return getActivityLogo(intent.getComponent());
    }

    ResolveInfo info = resolveActivity(
            intent, PackageManager.MATCH_DEFAULT_ONLY);
    if (info != null) {
        return info.activityInfo.loadLogo(this);
    }

    throw new NameNotFoundException(intent.toUri(0));
}
 

@Override
public Drawable getActivityBanner(Intent intent)
        throws NameNotFoundException {
    if (intent.getComponent() != null) {
        return getActivityBanner(intent.getComponent());
    }

    ResolveInfo info = resolveActivity(
            intent, PackageManager.MATCH_DEFAULT_ONLY);
    if (info != null) {
        return info.activityInfo.loadBanner(this);
    }

    throw new NameNotFoundException(intent.toUri(0));
}
 

public Bitmap getIcon(Intent intent) {
    synchronized (mCache) {
        final ResolveInfo resolveInfo = mPackageManager.resolveActivity(intent, 0);
        ComponentName component = intent.getComponent();

        if (resolveInfo == null || component == null) {
            return mDefaultIcon;
        }

        CacheEntry entry = cacheLocked(component, resolveInfo, null);
        return entry.icon;
    }
}
 

public void testSettingComponent() {
    Intent sentIntent = new Intent(instrumentation.getTargetContext(),
            ReceiverTestActivity.class);
    startActivity(sentIntent, null, null);
    Intent receivedIntent = getActivity().getIntent();
    assertTrue(receivedIntent != null);
    assertTrue(receivedIntent.getPackage() == null);
    ComponentName receivedComponentName = receivedIntent.getComponent();
    assertTrue(receivedComponentName != null);
    String packageName = receivedComponentName.getPackageName();
    assertEquals(packageName, getActivity().getPackageName());
}
 

@Override
public List<ResolveInfo> queryIntentReceivers(Intent intent, String resolvedType, int flags, int userId) {
	ComponentName comp = intent.getComponent();
	if (comp == null) {
		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
			if (intent.getSelector() != null) {
				intent = intent.getSelector();
				comp = intent.getComponent();
			}
		}
	}
	if (comp != null) {
		List<ResolveInfo> list = new ArrayList<ResolveInfo>(1);
		ActivityInfo ai = getReceiverInfo(comp, flags, userId);
		if (ai != null) {
			ResolveInfo ri = new ResolveInfo();
			ri.activityInfo = ai;
			list.add(ri);
		}
		return list;
	}

	// reader
	synchronized (mPackages) {
		String pkgName = intent.getPackage();
		if (pkgName == null) {
			return mReceivers.queryIntent(intent, resolvedType, flags);
		}
		final PackageParser.Package pkg = mPackages.get(pkgName);
		if (pkg != null) {
			return mReceivers.queryIntentForPackage(intent, resolvedType, flags, pkg.receivers);
		}
		return null;
	}
}
 

/**
 * Restart the app.
 */
public static void restartApp() {
	Context context = getContext();
	PackageManager packageManager = context.getPackageManager();
	Intent intent = packageManager.getLaunchIntentForPackage(context.getPackageName());
	ComponentName componentName = intent.getComponent();
	Intent mainIntent = Intent.makeRestartActivityTask(componentName);
	context.startActivity(mainIntent);
	System.exit(0);
}
 

@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
    if ("startActivity".equals(method.getName())) {
        int index = -1;
        for (int i = 0; i < args.length; i++) {
            if (args[i] instanceof Intent) {
                index = i;
                break;
            }
        }
        if (index != -1) {
            Intent raw = (Intent) args[index];
            ComponentName component = raw.getComponent();
            //log("startActivity, rawIntent=" + raw);
            if (component != null &&
                    component.getClassName().startsWith("nil.nadph.qnotified.")) {
                Intent wrapper = new Intent();
                wrapper.setClassName(component.getPackageName(), ActProxyMgr.STUB_ACTIVITY);
                wrapper.putExtra(ActProxyMgr.ACTIVITY_PROXY_INTENT, raw);
                args[index] = wrapper;
                //log("startActivity, wrap intent with " + wrapper);
            }
        }
    }
    try {
        return method.invoke(mOrigin, args);
    } catch (InvocationTargetException ite) {
        throw ite.getTargetException();
    }
}
 

/**
 * Returns true if the shortcuts already exists on the workspace. This must be called after
 * the workspace has been loaded. We identify a shortcut by its intent.
 */
private boolean shortcutExists(BgDataModel dataModel, Intent intent, UserHandle user) {
    final String intentWithPkg, intentWithoutPkg;
    if (intent == null) {
        // Skip items with null intents
        return true;
    }
    if (intent.getComponent() != null) {
        // If component is not null, an intent with null package will produce
        // the same result and should also be a match.
        String packageName = intent.getComponent().getPackageName();
        if (intent.getPackage() != null) {
            intentWithPkg = intent.toUri(0);
            intentWithoutPkg = new Intent(intent).setPackage(null).toUri(0);
        } else {
            intentWithPkg = new Intent(intent).setPackage(packageName).toUri(0);
            intentWithoutPkg = intent.toUri(0);
        }
    } else {
        intentWithPkg = intent.toUri(0);
        intentWithoutPkg = intent.toUri(0);
    }

    synchronized (dataModel) {
        for (ItemInfo item : dataModel.itemsIdMap) {
            if (item instanceof ShortcutInfo) {
                ShortcutInfo info = (ShortcutInfo) item;
                if (item.getIntent() != null && info.user.equals(user)) {
                    Intent copyIntent = new Intent(item.getIntent());
                    copyIntent.setSourceBounds(intent.getSourceBounds());
                    String s = copyIntent.toUri(0);
                    if (intentWithPkg.equals(s) || intentWithoutPkg.equals(s)) {
                        return true;
                    }
                }
            }
        }
    }
    return false;
}
 

public ComponentName startService(Intent intent) {
    String packageName;
    String className;
    if (intent.getComponent() != null) {
        packageName = intent.getComponent().getPackageName();
        className = intent.getComponent().getClassName();
    } else {
        ResolveInfo resolveService = getBaseContext().getPackageManager().resolveService(intent, 0);
        if (resolveService == null || resolveService.serviceInfo == null) {
            className = null;
            packageName = null;
        } else {
            packageName = resolveService.serviceInfo.packageName;
            className = resolveService.serviceInfo.name;
        }
    }
    if (!StringUtils.equals(getBaseContext().getPackageName(), packageName)) {
        return super.startService(intent);
    }
    packageName = DelegateComponent.locateComponent(className);
    if (packageName != null) {
        BundleImpl bundleImpl = (BundleImpl) Framework.getBundle(packageName);
        if (bundleImpl != null) {
            try {
                bundleImpl.startBundle();
            } catch (BundleException e) {
                log.error(e.getMessage() + " Caused by: ", e.getNestedException());
            }
        }
        return super.startService(intent);
    }
    try {
        if (ClassLoadFromBundle.loadFromUninstalledBundles(className) != null) {
            return super.startService(intent);
        }
    } catch (ClassNotFoundException e2) {
        log.info("Can't find class " + className + " in all bundles.");
    }
    try {
        if (Framework.getSystemClassLoader().loadClass(className) != null) {
            return super.startService(intent);
        }
        return null;
    } catch (ClassNotFoundException e3) {
        log.error("Can't find class " + className);
        return null;
    }
}
 

/**
 * Perform instantiation of the process's {@link Activity} object.  The
 * default implementation provides the normal system behavior.
 * 
 * @param cl The ClassLoader with which to instantiate the object.
 * @param className The name of the class implementing the Activity
 *                  object.
 * @param intent The Intent object that specified the activity class being
 *               instantiated.
 * 
 * @return The newly instantiated Activity object.
 */
public Activity newActivity(ClassLoader cl, String className,
        Intent intent)
        throws InstantiationException, IllegalAccessException,
        ClassNotFoundException {
    String pkg = intent != null && intent.getComponent() != null
            ? intent.getComponent().getPackageName() : null;
    return getFactory(pkg).instantiateActivity(cl, className, intent);
}