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   源码介绍

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该APP用于安卓扫描解析二维码

package com.example.ahui.qrcodeaction;

import android.Manifest;
import android.content.ClipData;
import android.content.ClipboardManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.text.SpannableString;
import android.text.style.UnderlineSpan;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import com.blankj.utilcode.util.ToastUtils;
import com.yzq.zxinglibrary.android.CaptureActivity;
import com.yzq.zxinglibrary.common.Constant;
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
    private Button copyNow;
    private EditText  scanText;
    private int REQUEST_CODE_SCAN = 1;

    //应用所有进入一起申请的权限
    public static String[] permissions = new String[]{
            Manifest.permission.WRITE_EXTERNAL_STORAGE,
            Manifest.permission.READ_EXTERNAL_STORAGE,
            Manifest.permission.CAMERA,
    };

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

        copyNow = findViewById(R.id.copyNow);
        copyNow.setOnClickListener(this);
        scanText = findViewById(R.id.scanText);

        if (!checkSelfPermission(this,permissions))
        {
            ActivityCompat.requestPermissions(this, permissions, 0);
        }

    }


    public static boolean checkSelfPermission(Context contexts, String[] permission) {

        for (int i = 0; i < permission.length; i  ) {
            if (ContextCompat.checkSelfPermission(contexts, permission[i]) != PackageManager.PERMISSION_GRANTED) {
                return false;
            }
        }
        return true;
    }


    public static boolean isCameraUseable() {

        boolean canUse =true;

        Camera mCamera = null;

        try{

            mCamera = Camera.open();

// setParameters 是针对魅族MX5。MX5通过Camera.open()拿到的Camera对象不为null

            Camera.Parameters mParameters = mCamera.getParameters();

            mCamera.setParameters(mParameters);

        }catch(Exception e) {

            canUse =false;

        }

        if(mCamera !=null) {
            mCamera.release();
        }
        return canUse;
    }



    public void QRAction(View view)
    {
        Intent intent = new Intent(MainActivity.this, CaptureActivity.class);
        startActivityForResult(intent, REQUEST_CODE_SCAN);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.copyNow:
            {

                final ClipboardManager clipboardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
                clipboardManager.addPrimaryClipChangedListener(new ClipboardManager.OnPrimaryClipChangedListener() {
                    @Override
                    public void onPrimaryClipChanged() {
                        ToastUtils.showShort("复制成功");
                    }
                });

                ClipData clipData = ClipData.newPlainText("", scanText.getText());
                clipboardManager.setPrimaryClip(clipData);
            }
                break;
                default:
                    break;

        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        // 扫描二维码/条码回传
        if (requestCode == REQUEST_CODE_SCAN && resultCode == RESULT_OK) {
            if (data != null) {

                String content = data.getStringExtra(Constant.CODED_CONTENT);

                SpannableString contents = new SpannableString(content);
                contents.setSpan((new UnderlineSpan()), 0, content.length(), 0);

                scanText.setText(contents);
                scanText.setSelection(contents.length());
            }
        }
    }
}