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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.

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