Using Android to generate two-dimensional code

Although there are many tools to generate two-dimensional code on the Internet, it is good to generate a two-dimensional code that belongs to your own code, the implementation method is very simple, you need to import a third-party class library

　Step One: Import third-party class library files: Import third-party class library files into Android studio

　　Step Two: the XML file layout, a edittext for the input of two-dimensional code content, a ImageView used to display the generated QR code, a generate button

<LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "vertical">    <EditTextAndroid:id= "@+id/ed"Android:layout_width= "Match_parent"Android:layout_height= "Wrap_content"        />    <ButtonAndroid:id= "@+id/btn2"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:text= "Generate two-dimensional code"        />    <ImageViewAndroid:id= "@+id/im"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content" /></LinearLayout>

Step Three: call the class and method in the third-party class library file in the Mainactivity.java file to generate the QR code

1 Package com.contentprovide.liuliu.aaa;2 3 import Android. Manifest;4 import android.content.Intent;5 import Android.content.pm.PackageManager;6 import Android.graphics.Bitmap;7 import Android.support.v4.app.ActivityCompat;8 import Android.support.v4.content.ContextCompat;9 import android.support.v7.app.AppCompatActivity;Ten import Android.os.Bundle; One import Android.view.View; A import Android.widget.Button; - import Android.widget.EditText; - import Android.widget.ImageView; the import Android.widget.TextView; -  - import com.xys.libzxing.zxing.activity.CaptureActivity; - import Com.xys.libzxing.zxing.decode.DecodeFormatManager; + import Com.xys.libzxing.zxing.decode.DecodeHandler; - import com.xys.libzxing.zxing.encoding.EncodingUtils; + import Com.xys.libzxing.zxing.utils.CaptureActivityHandler; A  at Public class Mainactivity extends Appcompatactivity { - Button btn2; -  - EditText Ed; - ImageView im; -  in @Override - protected void OnCreate (Bundle savedinstancestate) { to super.oncreate (savedinstancestate); + Setcontentview (r.layout.activity_main); -  the ed = (EditText) Findviewbyid (R.id.ed); * im = (ImageView) Findviewbyid (r.id.im); $ btn2 = (Button) Findviewbyid (R.ID.BTN2);Panax Notoginseng  -  the Btn2.setonclicklistener (New View.onclicklistener () { + @Override A Public void OnClick (view view) { the String s = Ed.gettext (). toString (); + try {//catch exception -  Bitmap Bitmap = Encodingutils.createqrcode (s, n, +, NULL);  im.setimagebitmap (bitmap);  $ } catch (Exception e) { -  -                 } the  -             }Wuyi         }); the  -  Wu     } -  About  $}

Step is very simple, there are a few steps to achieve the basic realization of the two-dimensional code generation.

Using an Android scan to parse a two-dimensional code

Using Android to generate a QR code