android掃描二維碼和生產二維碼

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極客學院掃描二維碼和產生二維碼

package com.example.testqr;import android.app.Activity;import android.content.Intent;import android.graphics.Bitmap;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;import android.widget.Toast;import com.google.zxing.WriterException;import com.zxing.activity.CaptureActivity;import com.zxing.encoding.EncodingHandler;public class MainActivity extends Activity {private Button startScan;private Button generateQr;private ImageView qrImageView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        startScan = (Button) findViewById(R.id.startScan);        generateQr = (Button) findViewById(R.id.generateQRCODE);        qrImageView = (ImageView)findViewById(R.id.qrIV);        startScan.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View view) {Intent intent = new Intent(MainActivity.this,CaptureActivity.class);startActivityForResult(intent, 0);}});                generateQr.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View view) {try {Bitmap bitmap = EncodingHandler.createQRCode("dota", 400);qrImageView.setImageBitmap(bitmap);} catch (WriterException e) {e.printStackTrace();}}});    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.main, menu);        return true;    }        @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {    if(resultCode == RESULT_OK){    String str = data.getStringExtra("result");    Toast.makeText(MainActivity.this, str, 0).show();    }    }    }

主要說明
1:用的庫 是在極客學院 資料裡的庫 也是下的網上的 因為報錯 把switch case 改成了 if else
2:掃描二維碼是CaptureActivity
3:產生二維碼的方法

   Bitmap bitmap = EncodingHandler.createQRCode("dota", 400);
   qrImageView.setImageBitmap(bitmap);

　　

android掃描二維碼和生產二維碼