-When the PIN does not match in the screen of import seed it does not show error message

-Set a button in the PIN request activity to clic when the complete PIN is completely typed
-In the PIN request activity, the OK button should not be enabled till a valid PIN is on it
-Change the button style in the PIN request screen

app/src/main/java/cy/agorise/crystalwallet/activities/PinRequestActivity.java

@@ -7,15 +7,25 @@ import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v7.app.AppCompatActivity;
 import android.text.Editable;
+import android.view.View;
+import android.widget.Button;
 import android.widget.EditText;
+import android.widget.Toast;
+
+import org.jetbrains.annotations.NotNull;
 
 import java.util.List;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
+import butterknife.OnClick;
 import butterknife.OnTextChanged;
 import cy.agorise.crystalwallet.R;
 import cy.agorise.crystalwallet.application.CrystalSecurityMonitor;
+import cy.agorise.crystalwallet.dialogs.material.DialogMaterial;
+import cy.agorise.crystalwallet.dialogs.material.NegativeResponse;
+import cy.agorise.crystalwallet.dialogs.material.PositiveResponse;
+import cy.agorise.crystalwallet.dialogs.material.QuestionDialog;
 import cy.agorise.crystalwallet.models.AccountSeed;
 import cy.agorise.crystalwallet.models.GeneralSetting;
 import cy.agorise.crystalwallet.util.PasswordManager;
@@ -24,6 +34,12 @@ import cy.agorise.crystalwallet.viewmodels.GeneralSettingListViewModel;
 public class PinRequestActivity extends AppCompatActivity {
     private String passwordEncrypted;
 
+    @BindView(R.id.btnOK)
+    Button btnOK;
+
+
+
+
     @Override
     public void onBackPressed() {
         //Do nothing to prevent the user to use the back button
@@ -38,6 +54,11 @@ public class PinRequestActivity extends AppCompatActivity {
         setContentView(R.layout.activity_pin_request);
         ButterKnife.bind(this);
 
+        /*
+        * Initially the button is disabled till the user type a valid PIN
+        * */
+        btnOK.setEnabled(false);
+
         GeneralSettingListViewModel generalSettingListViewModel = ViewModelProviders.of(this).get(GeneralSettingListViewModel.class);
         LiveData<List<GeneralSetting>> generalSettingsLiveData = generalSettingListViewModel.getGeneralSettingList();
         generalSettingsLiveData.observe(this, new Observer<List<GeneralSetting>>() {
@@ -59,9 +80,10 @@ public class PinRequestActivity extends AppCompatActivity {
         });
     }
 
-    @OnTextChanged(value = R.id.etPassword,
-            callback = OnTextChanged.Callback.AFTER_TEXT_CHANGED)
-    void afterPasswordChanged(Editable editable) {
+
+    @OnClick(R.id.btnOK)
+    void okClic(final View view) {
+
         if (PasswordManager.checkPassword(passwordEncrypted, etPassword.getText().toString())) {
             if (CrystalSecurityMonitor.getInstance(null).is2ndFactorSet()) {
                 CrystalSecurityMonitor.getInstance(null).call2ndFactor(this);
@@ -69,6 +91,26 @@ public class PinRequestActivity extends AppCompatActivity {
                 this.finish();
             }
         }
+        else{
+            Toast.makeText(getBaseContext(),this.getResources().getString(R.string.invalid_pin),
+                    Toast.LENGTH_SHORT).show();
+        }
+    }
+
+
+    @OnTextChanged(value = R.id.etPassword,
+            callback = OnTextChanged.Callback.AFTER_TEXT_CHANGED)
+    void afterPasswordChanged(Editable editable) {
+
+        /*
+        * If it is valid length enable button
+        * */
+        if(etPassword.getText().length()>=6){
+            btnOK.setEnabled(true);
+        }
+        else{
+            btnOK.setEnabled(false);
+        }
     }
 }
 

app/src/main/res/layout/activity_pin_request.xml

@@ -1,16 +1,19 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
     android:background="@drawable/gradient">
+
     <LinearLayout
+        android:id="@+id/linearMain"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_weight="1"
         android:gravity="center"
-        android:padding="5dp"
-        android:background="@drawable/gradient">
+        android:layout_centerInParent="true"
+        android:padding="5dp">
+
         <TextView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
@@ -26,5 +29,20 @@
             android:maxLength="10"
             android:textColor="@color/white"
             android:inputType="numberPassword" />
+
     </LinearLayout>
-</LinearLayout>
+
+    <Button
+        android:id="@+id/btnOK"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/linearMain"
+        android:layout_marginTop="5dp"
+        android:textColor="@color/white"
+        android:background="@android:color/transparent"
+        android:text="@string/ok"
+        android:layout_margin="20dp"
+        android:textSize="18dp"
+        android:layout_alignParentRight="true"/>
+
+</RelativeLayout>