默认二维码和自定义二维码以及生成二维码

首先导入ZXing库

自定义二维码布局

<FrameLayout
        android:id="@+id/fl_zxing_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

   <LinearLayout
       android:layout_alignParentBottom="true"
       android:orientation="horizontal"
       android:layout_width="match_parent"
       android:layout_height="wrap_content">

       <LinearLayout
           android:id="@+id/flash_light"
           android:gravity="center_horizontal"
           android:orientation="vertical"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content">

           <ImageView
               android:src="@mipmap/ic_launcher"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content" />

           <TextView
               android:textColor="#ffffff"
               android:text="闪关灯"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content" />

       </LinearLayout>

       <LinearLayout
           android:id="@+id/pic_scan"
           android:gravity="center_horizontal"
           android:orientation="vertical"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content">

           <ImageView
               android:src="@mipmap/ic_launcher"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content" />
           <TextView
               android:text="相册"
               android:textColor="#ffffff"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content" />

       </LinearLayout>

   </LinearLayout>

自定义取景框
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <SurfaceView
        android:id="@+id/preview_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <!--取景框-->
    <com.dash.zxinglibrary.view.ViewfinderView
        android:id="@+id/viewfinder_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:inner_corner_color="#ff0000"
        app:inner_corner_length="30dp"
        app:inner_corner_width="5dp"
        app:inner_height="200dp"
        app:inner_margintop="150dp"
        app:inner_scan_bitmap="@drawable/scan_image"
        app:inner_scan_iscircle="true"
        app:inner_scan_speed="10"
        app:inner_width="200dp"/>

</FrameLayout>

生成二维码的布局

<EditText
        android:id="@+id/edit_text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <Button
        android:onClick="normal"
        android:text="生成默认的"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <Button
        android:onClick="logo"
        android:text="生成logo"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <ImageView
        android:id="@+id/image_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

自定义二维码Activity

 private LinearLayout flash_light;
    private boolean flag = false;
    private LinearLayout pic_scan;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_custom_capatrue);

        flash_light = findViewById(R.id.flash_light);
        pic_scan = findViewById(R.id.pic_scan);

        //ZXing里面的
        CaptureFragment captureFragment = new CaptureFragment();

        //设置自定义的...扫描布局
        //给扫描的fragment定制一个页面
        CodeUtils.setFragmentArgs(captureFragment,R.layout.my_camera);
        //设置一个解析的监听回调
        captureFragment.setAnalyzeCallback(analyzeCallback);
        //使用扫描的fragment替换这个frameLayout
        getSupportFragmentManager().beginTransaction().replace(R.id.fl_zxing_container,captureFragment).commit();

        //闪关灯点击事件
        flash_light.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (flag){
                   CodeUtils.isLightEnable(false);
                   flag = false;
                }else {
                    CodeUtils.isLightEnable(true);
                    flag = true;
                }
            }
        });

        //相册的点击事件
        pic_scan.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
               //隐式意图
                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_PICK);
                intent.setType("image/*");
                startActivityForResult(intent,1002);
            }
        });

    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == 1002){

            //uri路径......需要把uri路径转换为绝对路径!!!!!!!!!!!!!!!!!!!file...new file(绝对路径)
            Uri uri = data.getData();

            //解析图片的方法...ImageUtil.getImageAbsolutePath(this, uri)通过uri路径得到图片在手机中的绝对路径
            CodeUtils.analyzeBitmap(ImageUtil.getImageAbsolutePath(this, uri), new CodeUtils.AnalyzeCallback() {
                @Override
                public void onAnalyzeSuccess(Bitmap mBitmap, String result) {
                    //Bitmap mBitmap 解析的那张图片, String result解析的结果
                    Toast.makeText(CustomCapatrueActivity.this,"解析结果:"+result,Toast.LENGTH_SHORT).show();
                }

                @Override
                public void onAnalyzeFailed() {
                    Toast.makeText(CustomCapatrueActivity.this,"解析二维码失败",Toast.LENGTH_SHORT).show();
                }
            });
        }
    }


    /**
     * 二维码解析回调函数
     */
    CodeUtils.AnalyzeCallback analyzeCallback = new CodeUtils.AnalyzeCallback() {
        @Override
        public void onAnalyzeSuccess(Bitmap mBitmap, String result) {
            Intent resultIntent = new Intent();
            Bundle bundle = new Bundle();
            bundle.putInt(CodeUtils.RESULT_TYPE,CodeUtils.RESULT_SUCCESS);
            bundle.putString(CodeUtils.RESULT_STRING,result);
            resultIntent.putExtras(bundle);
            setResult(RESULT_OK, resultIntent);
            finish();
        }

        @Override
        public void onAnalyzeFailed() {
            Intent resultIntent = new Intent();
            Bundle bundle = new Bundle();
            bundle.putInt(CodeUtils.RESULT_TYPE, CodeUtils.RESULT_FAILED);
            bundle.putString(CodeUtils.RESULT_STRING, "");
            resultIntent.putExtras(bundle);
            setResult(RESULT_OK, resultIntent);
            finish();
        }
    };

生成二维码Activity

private EditText editText;
    private ImageView imageView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_generate);

        editText = findViewById(R.id.edit_text);
        imageView = findViewById(R.id.image_view);
    }

    public void normal(View view) {

        String s = editText.getText().toString();
        //可以判断一下非空
        if (s != null) {
            Bitmap bitmap = CodeUtils.createImage(s, 500, 500, null);

            imageView.setImageBitmap(bitmap);
        }
    }

    public void logo(View view) {

        String s = editText.getText().toString();

        //可以判断一下非空
        if (s != null) {

            //如何把资源目录下的图片转成bitmap
            Bitmap logo = BitmapFactory.decodeResource(getResources(),R.mipmap.ic_launcher);
            Bitmap bitmap = CodeUtils.createImage(s,500,500,logo);

            imageView.setImageBitmap(bitmap);
        }
    }

初始化Application

public class MyApplication extends Application{

    @Override
    public void onCreate() {
        super.onCreate();

        //初始化zxing
        ZXingLibrary.initDisplayOpinion(this);
    }
}

在主体Activity调用各项二维码

private final int REQUFST_CODE = 101;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void normalScan(View view) {

        //调用默认界面扫描二维码。。。字符串
        Intent intent = new Intent(MainActivity.this, CaptureActivity.class);
        startActivityForResult(intent,REQUFST_CODE);
    }

    @Override                           //请求码          //结果码
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == REQUFST_CODE){
            //处理扫描结果(在界面上显示)
            if(null != data){
                //拿到传递回来的数据
                Bundle bundle = data.getExtras();
                if (bundle == null){
                    return;
                }

                if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_SUCCESS){
                    //解析得到的结果
                    String result = bundle.getString(CodeUtils.RESULT_STRING);
                    Toast.makeText(this,"解析结果:"+result,Toast.LENGTH_SHORT).show();
                }else if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_FAILED){
                    Toast.makeText(this,"解析二维码失败",Toast.LENGTH_SHORT).show();
                }
            }
        }
    }

    /**
     * 自定义扫描界面
     * @param view
     */

    public void customScan(View view) {

        //调用默认界面扫描二维码。。。字符串
        Intent intent = new Intent(MainActivity.this, CustomCapatrueActivity.class);
        startActivityForResult(intent,REQUFST_CODE);
    }

    public void generate(View view) {

        Intent intent = new Intent(MainActivity.this,GenerateActivity.class);
        startActivity(intent);
    }