- Create a Android Project in Android Studio as as usually, with minSdkVersion of 14 or higher. We need the Package Names in the next step.
- Visit reCAPTCHA Android signup site, fill in the blanks to get your Site key and Secret key. (Get your own, I will delete my keys after the samples finished.) Copy the keys to your program as String.
- Open SDK Manager in Android Studio, make sure you include Google Repository in your SDK Tools.
- Add the follow Google Play services APIs into your Gradle dependencies:
compile 'com.google.android.gms:play-services-base:11.0.0'
compile 'com.google.android.gms:play-services-basement:11.0.0'
compile 'com.google.android.gms:play-services-safetynet:11.0.0'
compile 'com.google.android.gms:play-services-tasks:11.0.0'
This video show how to:
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Modify the code:
MainActivity.java
package com.blogspot.android_er.recaptcha;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
import com.google.android.gms.safetynet.SafetyNet;
import com.google.android.gms.safetynet.SafetyNetApi;
public class MainActivity extends AppCompatActivity
implements GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener{
final String SiteKey = "6LdMKyUUAAAAAN0ndw7byI03_qpbpjxKY-mTQnLw";
final String SecretKey = "6LdMKyUUAAAAALjcWovpXgcoXiI4i9ykn1U9qs8I";
private GoogleApiClient mGoogleApiClient;
Button btnRequest;
TextView tvResult;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvResult = (TextView)findViewById(R.id.result);
btnRequest = (Button)findViewById(R.id.request);
btnRequest.setOnClickListener(RqsOnClickListener);
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(SafetyNet.API)
.addConnectionCallbacks(MainActivity.this)
.addOnConnectionFailedListener(MainActivity.this)
.build();
mGoogleApiClient.connect();
}
View.OnClickListener RqsOnClickListener = new View.OnClickListener() {
@Override
public void onClick(View view) {
tvResult.setText("");
SafetyNet.SafetyNetApi.verifyWithRecaptcha(mGoogleApiClient, SiteKey)
.setResultCallback(new ResultCallback<SafetyNetApi.RecaptchaTokenResult>() {
@Override
public void onResult(SafetyNetApi.RecaptchaTokenResult result) {
Status status = result.getStatus();
if ((status != null) && status.isSuccess()) {
tvResult.setText("isSuccess()\n");
// Indicates communication with reCAPTCHA service was
// successful. Use result.getTokenResult() to get the
// user response token if the user has completed
// the CAPTCHA.
if (!result.getTokenResult().isEmpty()) {
tvResult.append("!result.getTokenResult().isEmpty()");
// User response token must be validated using the
// reCAPTCHA site verify API.
}else{
tvResult.append("result.getTokenResult().isEmpty()");
}
} else {
Log.e("MY_APP_TAG", "Error occurred " +
"when communicating with the reCAPTCHA service.");
tvResult.setText("Error occurred " +
"when communicating with the reCAPTCHA service.");
// Use status.getStatusCode() to determine the exact
// error code. Use this code in conjunction with the
// information in the "Handling communication errors"
// section of this document to take appropriate action
// in your app.
}
}
});
}
};
@Override
public void onConnected(@Nullable Bundle bundle) {
Toast.makeText(this, "onConnected()", Toast.LENGTH_LONG).show();
}
@Override
public void onConnectionSuspended(int i) {
Toast.makeText(this,
"onConnectionSuspended: " + i,
Toast.LENGTH_LONG).show();
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
Toast.makeText(this,
"onConnectionFailed():\n" + connectionResult.getErrorMessage(),
Toast.LENGTH_LONG).show();
}
}
layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://ift.tt/nIICcg"
xmlns:tools="http://ift.tt/LrGmb4"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_margin="20dp"
tools:context="com.blogspot.android_er.recaptcha.MainActivity" >
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:autoLink="web"
android:text="http://ift.tt/1h2gLTb"
android:textStyle="bold" />
<Button
android:id="@+id/request"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Request SafetyNet reCAPTCHA API"/>
<TextView
android:id="@+id/result"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
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