空指针保护

3 months ago · 995d9cc127
parent 6d1f0832c6
commit 995d9cc127
1 changed files with 6 additions and 1 deletions
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MainActivity.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MainActivity.java
@ -184,7 +184,12 @@ public class MainActivity extends AppCompatActivity {
        MicroPhotoContext.AppConfig appConfig = MicroPhotoContext.getMpAppConfig(context);
        StringBuilder stringBuilder = new StringBuilder();
        if (TextUtils.isEmpty(appConfig.cmdid)) {
-            stringBuilder.append("CMDID：" + SysApi.getSerialNo(getApplicationContext()) + " (SN)");
+            String sn = SysApi.getSerialNo(getApplicationContext());
+            if (TextUtils.isEmpty(sn)) {
+                stringBuilder.append("CMDID：");
+            } else {
+                stringBuilder.append("CMDID：" + sn + " (SN)");
+            }
         } else {
            stringBuilder.append("CMDID：" + appConfig.cmdid);
        }