PredictiveAppsProvider: fix null pointer exception

If component is null, we call ComponentName#getPackageName() on a null
object reference.

Happened when opening an app while it was upgraded.

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Stacktrace:

java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.ComponentName.getPackageName()' on a null object reference
    at com.android.launcher3.allapps.PredictiveAppsProvider.buildComponentString(PredictiveAppsProvider.java:99)
    at com.android.launcher3.allapps.PredictiveAppsProvider.updateComponentCount(PredictiveAppsProvider.java:32)
    at com.android.launcher3.Launcher.startActivitySafely(Launcher.java:2764)
    at com.android.launcher3.Launcher.startAppShortcutOrInfoActivity(Launcher.java:2520)
    at com.android.launcher3.Launcher.onClick(Launcher.java:2352)
    at android.view.View.performClick(View.java:6320)
    at android.view.View$PerformClick.run(View.java:25087)
    at android.os.Handler.handleCallback(Handler.java:869)
    at android.os.Handler.dispatchMessage(Handler.java:101)
    at android.os.Looper.loop(Looper.java:206)
    at android.app.ActivityThread.main(ActivityThread.java:6733)
    at java.lang.reflect.Method.invoke(Method.java)
    at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:845)

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Issue: BUGBASH-1524
Change-Id: I970453f5da87c36e9915b8c0bbe9f1cd2302ec93
Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/com/android/launcher3/allapps/PredictiveAppsProvider.java b/src/com/android/launcher3/allapps/PredictiveAppsProvider.java
index ba39094c1..43d7115aa 100644
--- a/src/com/android/launcher3/allapps/PredictiveAppsProvider.java
+++ b/src/com/android/launcher3/allapps/PredictiveAppsProvider.java
@@ -4,6 +4,7 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Process;
+import android.util.Log;
 
 import com.android.launcher3.AppInfo;
 import com.android.launcher3.Utilities;
@@ -17,6 +18,8 @@ import java.util.List;
 import java.util.Set;
 
 public class PredictiveAppsProvider {
+    private static final String TAG = "PredictiveAppsProvider";
+
     private static final int NUM_PREDICTIVE_APPS_TO_HOLD = 9; // since we can't have more than 9 columns
 
     private static final String PREDICTIVE_APPS_KEY = "predictive_apps";
@@ -29,6 +32,11 @@ public class PredictiveAppsProvider {
     }
 
     public void updateComponentCount(ComponentName component) {
+        if (component == null) {
+            Log.w(TAG, "Can not update component count because component is null!");
+            return;
+        }
+
         String key = buildComponentString(component);
         long current = mPrefs.getLong(key, 0);