闯关上梁山李颖,bibiwg,河北省人事局
本文实例为大家分享了android扫描和生成二维码的具体代码,供大家参考,具体内容如下
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() { //点击按钮扫描二维码 @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!=null){ string content = data.getstringextra(constant.coded_content); if (textutils.isempty(content)){ toast.maketext(mainactivity.this, "您的输入为空!", 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,"扫描"+content,toast.length_short).show(); } } } }
activity.main.xml
<android.support.constraint.constraintlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".mainactivity" android:orientation="vertical"> <button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="扫一扫"/> <imageview android:id="@+id/img" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </android.support.constraint.constraintlayout>
需要配置的权限
<uses-permission android:name="android.permission.internet"/> <uses-permission android:name="android.permission.camera"></uses-permission> <uses-permission android:name="android.permission.vibrate" /> <uses-permission android:name="android.permission.write_external_storage"></uses-permission> <uses-feature android:name="android.hardware.camera" /> <uses-feature android:name="android.hardware.camera.autofocus" /> <uses-permission android:name="android.permission.flashlight" />
build.gradle
minsdkversion 16 //配置16 implementation'com.github.yuzhiqiang1993:zxing:2.2.1' //依赖
外部build.gradle
allprojects { repositories { google() jcenter() maven { url 'https://jitpack.io' } //加这行代码 } }
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