check update

app/src/main/java/me/yoqi/deleteallcontacts/MainActivity.java

@@ -60,6 +60,7 @@ public class MainActivity extends AppCompatActivity {
         contactManager = new ContactManager(mContext);
         initView();
         initData();
+        checkUpdate();
     }
 
     void initView() {
@@ -103,4 +104,18 @@ public class MainActivity extends AppCompatActivity {
         ArrayList<String> allContact = contactManager.getAllContact();
         tvContact.setText(allContact.toString());
     }
+
+    /**
+    * check update
+     */
+    void checkUpdate() {
+        String version = "";
+        try {
+            version = getPackageManager().getPackageInfo(getPackageName(), 0).versionName;
+        } catch (PackageManager.NameNotFoundException e) {
+            e.printStackTrace();
+        }
+        String checkUpdateUrl="http://www.yoqi.me/checkUpdate.php?app=me.yoqi.deleteallcontacts&version="+version;
+        
+    }
 }

app/src/main/java/me/yoqi/deleteallcontacts/model/Config.java

@@ -0,0 +1,6 @@
+class Config{
+    public static final String APP_NAME = "Delete All Contacts";
+    public static final String APP_VERSION = "1.0.0";
+    public static final String APP_AUTHOR = "Yoqi";
+    public static final String APP_AUTHOR_EMAIL = "";
+}