扫描二维码

生成二维码

main.xml

<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.bwie.asus.zxing.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_result"        android:layout_width="wrap_content"        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>

MainActivity.java

import android.content.Intent;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;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;public class MainActivity extends AppCompatActivity {    private TextView tv_result;    private EditText ed_text;    private ImageView img;    private CheckBox isLogo;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        tv_result=(TextView)findViewById(R.id.tv_result);        ed_text=(EditText)findViewById(R.id.et_text);        img=(ImageView)findViewById(R.id.img);        isLogo=(CheckBox)findViewById(R.id.is_logo);    }    //生成二维码    public void make(View view){        String input=ed_text.getText().toString().trim();        Bitmap bitmap= EncodingUtils.createQRCode(input,500,500,isLogo.isChecked()?                BitmapFactory.decodeResource(getResources(),R.mipmap.ic_launcher):null);        img.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");            tv_result.setText(result);            ed_text.setText(result);        }else if(resultCode==RESULT_CANCELED){            tv_result.setText("扫描出错");        }    }}