How to scan and generate QR Code in Android
This article mainly introduces how to scan and generate QR code in Android, the content is detailed and easy to understand, the operation is simple and fast, and it has a certain reference value. I believe you will gain something after reading this article on how to scan and generate QR code in Android. Let's take a look.
MainActivity.java
Public class MainActivity extends AppCompatActivity {private ImageView mImageView; @ Override protected void onCreate (Bundle savedInstanceState) {super.onCreate (savedInstanceState); setContentView (R.layout.activity_main); Button button = findViewById (R.id.btn); mImageView = findViewById (R.id.img); button.setOnClickListener (new View.OnClickListener () {/ / Click the button to scan the QR code @ Override public void onClick (View view) {Intent intent = new Intent (MainActivity.this,CaptureActivity.class); startActivityForResult (intent,2) }});} @ Override protected void onActivityResult (int requestCode, int resultCode, Intent data) {super.onActivityResult (requestCode, resultCode, data); if (requestCode==200&& resultCode==RESULT_OK) {if (data input null) {String content = data.getStringExtra (Constant.CODED_CONTENT); if (TextUtils.isEmpty (content)) {Toast.makeText (MainActivity.this, "your input is empty!", Toast.LENGTH_SHORT). Show (); return } Bitmap logo = BitmapFactory.decodeResource (getResources (), R.mipmap.ic_launcher); try {Bitmap bitmap = CodeCreator.createQRCode (content, 400,400, logo); mImageView.setImageBitmap (bitmap);} catch (WriterException e) {e.printStackTrace ();} Toast.makeText (MainActivity.this, "scan" + content,Toast.LENGTH_SHORT). Show ();}
Activity.main.xml
Permissions required to be configured
Build.gradle
MinSdkVersion 16 / / configure 16 implementationists com.github.yuzhiqiang1993ZxingVOG 2.2.1' / / dependency
External build.gradle
Allprojects {repositories {google () jcenter () maven {url 'https://jitpack.io'} / / add this line of code}} this article on "how to scan and generate QR codes in Android" ends here. Thank you for reading! I believe that everyone has a certain understanding of the knowledge of "how to scan and generate QR codes in Android". If you want to learn more, you are welcome to follow the industry information channel.
