Android: Check for missing emulator tool

Task-number: QTCREATORBUG-20160
Change-Id: I481adfe9a7a1b2c9c151d01d2fe1b010735c898b
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/android/androidavdmanager.cpp

@@ -26,6 +26,7 @@
 
 #include "androidtoolmanager.h"
 
+#include "coreplugin/icore.h"
 #include "utils/algorithm.h"
 #include "utils/qtcassert.h"
 #include "utils/runextensions.h"
@@ -34,6 +35,7 @@
 #include <QApplication>
 #include <QFileInfo>
 #include <QLoggingCategory>
+#include <QMessageBox>
 #include <QSettings>
 
 #include <chrono>
@@ -270,6 +272,15 @@ QString AndroidAvdManager::startAvd(const QString &name) const
 
 bool AndroidAvdManager::startAvdAsync(const QString &avdName) const
 {
+    QFileInfo info(m_config.emulatorToolPath().toString());
+    if (!info.exists()) {
+        QMessageBox::critical(Core::ICore::dialogParent(),
+                              tr("Emulator Tool Is Missing"),
+                              tr("Install the missing emulator tool (%1) to the"
+                                 " installed Android SDK.")
+                              .arg(m_config.emulatorToolPath().toString()));
+        return false;
+    }
     QProcess *avdProcess = new QProcess();
     QObject::connect(avdProcess, static_cast<void (QProcess::*)(int)>(&QProcess::finished),
                      avdProcess, &QObject::deleteLater);

src/plugins/android/androidavdmanager.h

@@ -36,6 +36,8 @@ class AvdManagerOutputParser;
 
 class AndroidAvdManager
 {
+    Q_DECLARE_TR_FUNCTIONS(Android::Internal::AndroidAvdManager)
+
 public:
     AndroidAvdManager(const AndroidConfig& config = AndroidConfigurations::currentConfig());
     ~AndroidAvdManager();