二维码生成及扫描

package com.bwei.test.erweima;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.CheckBox;import android.widget.EditText;import android.widget.ImageView;import android.widget.TextView;import com.xys.libzxing.zxing.activity.CaptureActivity;import com.xys.libzxing.zxing.encoding.EncodingUtils;import static android.app.Activity.RESULT_CANCELED;import static android.app.Activity.RESULT_OK;public class MainActivity extends AppCompatActivity {    private TextView mTv_Ruslet;    private EditText mInput;    private ImageView mImg;    private CheckBox isLogo;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mTv_Ruslet = (TextView) findViewById(R.id.tv_ruselt);        mInput = (EditText) findViewById(R.id.et_text);        mImg = (ImageView) findViewById(R.id.img);        isLogo = (CheckBox) findViewById(R.id.is_logo);    }    //生成二维码    public void make(View view){        String input=mInput.getText().toString().trim();        //生成二维码，然后为二维码增加logo        Bitmap bitmap= EncodingUtils.createQRCode(input,500,500,isLogo.isChecked() ? BitmapFactory.decodeResource(getResources(),  R.mipmap.ic_launcher) : null        );        mImg.setImageBitmap(bitmap);    }    //扫描二维码    public void scan(View view){        startActivityForResult(new Intent(MainActivity.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");            mTv_Ruslet.setText(result);            mInput.setText(result);        }else if(resultCode==RESULT_CANCELED){            mTv_Ruslet.setText("扫描出错");        }    }}

<?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:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"   android:orientation="vertical"    tools:context="com.bwei.test.erweima.MainActivity">    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:onClick="scan"        android:text="扫描二维码" />    <TextView        android:id="@+id/tv_ruselt"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:textSize="26sp" />    <EditText        android:id="@+id/et_text"        android:layout_width="match_parent"        android:layout_height="wrap_content" />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:onClick="make"        android:text="生成二维码" />    <CheckBox        android:id="@+id/is_logo"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="check" />    <ImageView        android:id="@+id/img"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center"        android:src="@mipmap/ic_launcher" /></LinearLayout>
 
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