Zxing实现安卓二维码扫描功能

步骤一：在项目的build.gradle下添加一行依赖：compile 'com.mylhyl:zxingscanner:1.6.0'步骤二：在activity_main中写布局    <Button              android:id="@+id/ iv_saoyisao"              android:text="扫一扫"              android:layout_centerInParent="true"              android:layout_width="wrap_content"              android:layout_height="wrap_content" />  步骤三：给Button设置点击监听事件 iv_saoyisao.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Toast.makeText(getContext(),"点击扫码",Toast.LENGTH_SHORT).show();                startActivity(new Intent(getActivity(), HaActivity.class));            }        });步骤四： @Override    public void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        if (requestCode==100&&resultCode==200){            String result = data.getStringExtra("data");        }    }步骤五：在跳转到的界面的布局文件里：<com.mylhyl.zxing.scanner.ScannerView        android:id="@+id/scanner_view"        android:layout_width="match_parent"        android:layout_height="match_parent"></com.mylhyl.zxing.scanner.ScannerView>步骤六：在点击监听事件里： scanner_view.setOnScannerCompletionListener(new OnScannerCompletionListener() {            @Override            public void OnScannerCompletion(Result rawResult, ParsedResult parsedResult, Bitmap barcode) {                setResult(200,new Intent().putExtra("data",rawResult.getText()));                Toast.makeText(HaActivity.this,"扫描成功。"+rawResult.getText(),Toast.LENGTH_SHORT).show();                finish();            }        });步骤七：重写以下两个方法 @Override    protected void onPause() {        super.onPause();        scanner_view.onPause();    }    @Override    protected void onResume() {        super.onResume();        scanner_view.onResume();    }步骤八：在Android.Manifest中添加相机和网络权限<uses-permission android:name="android.permission.CAMERA" /><uses-permission android:name="android.permission.INTERNET" />