diff --git a/app/login.tsx b/app/login.tsx
index d941cece..5298467d 100644
--- a/app/login.tsx
+++ b/app/login.tsx
@@ -264,6 +264,12 @@ const Login: React.FC = () => {
                 onChangeText={(text: string) =>
                   setCredentials({ ...credentials, username: text })
                 }
+                onEndEditing={(e) => {
+                  const newValue = e.nativeEvent.text;
+                  if (newValue && newValue !== credentials.username) {
+                    setCredentials({ ...credentials, username: newValue });
+                  }
+                }}
                 value={credentials.username}
                 keyboardType='default'
                 returnKeyType='done'
@@ -280,6 +286,12 @@ const Login: React.FC = () => {
                 onChangeText={(text: string) =>
                   setCredentials({ ...credentials, password: text })
                 }
+                onEndEditing={(e) => {
+                  const newValue = e.nativeEvent.text;
+                  if (newValue && newValue !== credentials.password) {
+                    setCredentials({ ...credentials, password: newValue });
+                  }
+                }}
                 value={credentials.password}
                 secureTextEntry
                 keyboardType='default'
@@ -292,7 +304,12 @@ const Login: React.FC = () => {
               />
 
               <View className='mt-4'>
-                <Button onPress={handleLogin}>{t("login.login_button")}</Button>
+                <Button
+                  onPress={handleLogin}
+                  disabled={!credentials.username.trim()}
+                >
+                  {t("login.login_button")}
+                </Button>
               </View>
               <View className='mt-3'>
                 <Button
@@ -394,6 +411,12 @@ const Login: React.FC = () => {
                   onChangeText={(text) =>
                     setCredentials({ ...credentials, username: text })
                   }
+                  onEndEditing={(e) => {
+                    const newValue = e.nativeEvent.text;
+                    if (newValue && newValue !== credentials.username) {
+                      setCredentials({ ...credentials, username: newValue });
+                    }
+                  }}
                   value={credentials.username}
                   keyboardType='default'
                   returnKeyType='done'
@@ -410,6 +433,12 @@ const Login: React.FC = () => {
                   onChangeText={(text) =>
                     setCredentials({ ...credentials, password: text })
                   }
+                  onEndEditing={(e) => {
+                    const newValue = e.nativeEvent.text;
+                    if (newValue && newValue !== credentials.password) {
+                      setCredentials({ ...credentials, password: newValue });
+                    }
+                  }}
                   value={credentials.password}
                   secureTextEntry
                   keyboardType='default'
@@ -423,6 +452,7 @@ const Login: React.FC = () => {
                   <Button
                     onPress={handleLogin}
                     loading={loading}
+                    disabled={!credentials.username.trim()}
                     className='flex-1 mr-2'
                   >
                     {t("login.login_button")}