二维码的生成

　这是一个二维码扫描的教程

使用的依赖包在这里，http://download.csdn.net/detail/github_35546522/9651725

下载后需要import 后直接配置下依赖即可

//布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<Button
android:id="@+id/bt_decode"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="bt_decode"
android:text="扫描二维码" />

<TextView
android:id="@+id/tv_decode"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="扫描结果：" />
<EditText
android:id="@+id/et_encode"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="请输入要编译的文字" />
<Button
android:id="@+id/bt_encode"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="bt_encode"
android:text="生成二維碼" />

<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="是否编译logo"
android:id="@+id/cb_ishavelogo"
android:checked="false" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/img_encoderesult" />
</LinearLayout>

//逻辑的处理

package com.qg.lizhanqi;

import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.xys.libzxing.zxing.activity.CaptureActivity;
import com.xys.libzxing.zxing.encoding.EncodingUtils;

public class MainActivity extends AppCompatActivity {
private Button btDecode;
private TextView tvDecode;
private EditText etEncode;
private Button btEncode;
private CheckBox cbIshavelogo;
private ImageView imgEncoderesult;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btDecode = (Button) findViewById(R.id.bt_decode);
tvDecode = (TextView) findViewById(R.id.tv_decode);
etEncode = (EditText) findViewById(R.id.et_encode);
btEncode = (Button) findViewById(R.id.bt_encode);
cbIshavelogo = (CheckBox) findViewById(R.id.cb_ishavelogo);
imgEncoderesult = (ImageView) findViewById(R.id.img_encoderesult);
}

//扫描解码
public void bt_decode(View view) {
startActivityForResult(new Intent(this, CaptureActivity.class), 0);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
Bundle bundle = data.getExtras();
String result = bundle.getString("result");
//显示到TextView上
tvDecode.setText(result);
//处理扫描结果
lastwork(result);
}
}
//处理扫描结果的方法
private void lastwork(String result) {
if(result.startsWith("http://")||result.startsWith("https://")){//网页
//跳转到浏览器加载网页
Intent it = new Intent(Intent.ACTION_VIEW);//跳转意图
it.setData(Uri.parse(result));//设置跳转携带的参数
startActivity(it);//跳转
// finish(); //关闭当前页面
}else if(result.startsWith("tel:")){//电话
Intent it = new Intent(Intent.ACTION_DIAL);
it.setData(Uri.parse(result));
startActivity(it);
}else if(result.startsWith("smsto:")){//短信
Intent it = new Intent(Intent.ACTION_SENDTO);
it.setData(Uri.parse(result));
startActivity(it);
}else if(result.startsWith("mailto:")){//邮件
Intent it = new Intent(Intent.ACTION_SENDTO);
it.setData(Uri.parse(result));
startActivity(it);
}else if(result.startsWith("market://")){//应用市场
Intent it = new Intent(Intent.ACTION_SENDTO);
it.setData(Uri.parse(result));
startActivity(it);
}else{//其他的弹窗显示
Toast.makeText(MainActivity.this, result, Toast.LENGTH_SHORT).show();
}
}
//生成二维码图
public void bt_encode(View view) {
String text = etEncode.getText().toString().trim();
if (TextUtils.isEmpty(text)) {
Toast.makeText(MainActivity.this, "无可编译的字段", Toast.LENGTH_SHORT).show();
} else {
//      createQRCode(文本，宽，高，logo图片)
// Bitmap qrCode = EncodingUtils.createQRCode(text, 500, 500, null);//最基本的
//使用三目运算符判断选择框是否选中，生成是否带有logo的二维码图片
Bitmap qrCode = EncodingUtils.createQRCode(text, 500, 500, cbIshavelogo.isChecked() ? BitmapFactory.decodeResource(getResources(), R.drawable.logo) : null);
imgEncoderesult.setImageBitmap(qrCode);
}
}
}