使用MVP实现扫描二维码,生成二维码

//实现二维码首先要导入依赖

implementation 'cn.yipianfengye.android:zxing-library:2.2'

创建一个类继承application中进行初始化(清单文件要注册)

public class App extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        ZXingLibrary.initDisplayOpinion(this);  (注册)
    }
}

//添加权限

<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.FLASHLIGHT" />

以下是代码

首先是布局添加两个按钮    一是扫描二维码   二是生成二维码

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


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

     <Button
         android:id="@+id/btn1"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:text="生成二维码"
         />

</LinearLayout>

这是跳到另一个activity里面实现生成LOGO二维码和  普通二维码

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


    <EditText
        android:id="@+id/ed"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="生成LOGO二维码图片"
        />

    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="生成普通二维码图片"
        />
    <ImageView
        android:id="@+id/image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

App实现注册
package com.example.day6;

import android.app.Application;

import com.uuzuche.lib_zxing.activity.ZXingLibrary;

public class App extends Application {
@Override
public void onCreate() {
super.onCreate();
ZXingLibrary.initDisplayOpinion(this);
}
}

Mainactivity

package com.example.day6;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.uuzuche.lib_zxing.activity.CaptureActivity;
import com.uuzuche.lib_zxing.activity.CodeUtils;

public class MainActivity extends AppCompatActivity {

    private Button btn;
    private Button btn1;
    private Presenter mPresenter;
    private static final int REQUEST_CODE_SCAN=1000;

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

    private void initView() {
        btn = findViewById(R.id.btn);
        btn1 = findViewById(R.id.btn1);
        mPresenter = new Presenter();


        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,CaptureActivity.class);
                startActivityForResult(intent,REQUEST_CODE_SCAN);
            }
        });
        btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,SendActivity.class);
                startActivity(intent);
            }
        });

        mPresenter.setOnPresenter(new Presenter.onPresenter() {
            @Override
            public void success(String result) {
                Toast.makeText(MainActivity.this,"解析结果:"+result,Toast.LENGTH_SHORT).show();
            }

            @Override
            public void dile() {
                Toast.makeText(MainActivity.this,"扫描失败",Toast.LENGTH_SHORT).show();
            }
        });
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

       mPresenter.setpan(requestCode, data);

    }
}

presenter 类实现MVP框架  接口回调

package com.example.day6;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.uuzuche.lib_zxing.activity.CaptureActivity;
import com.uuzuche.lib_zxing.activity.CodeUtils;

public class MainActivity extends AppCompatActivity {

    private Button btn;
    private Button btn1;
    private Presenter mPresenter;
    private static final int REQUEST_CODE_SCAN=1000;

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

    private void initView() {
        btn = findViewById(R.id.btn);
        btn1 = findViewById(R.id.btn1);
        mPresenter = new Presenter();


        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,CaptureActivity.class);
                startActivityForResult(intent,REQUEST_CODE_SCAN);
            }
        });
        btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,SendActivity.class);
                startActivity(intent);
            }
        });

        mPresenter.setOnPresenter(new Presenter.onPresenter() {
            @Override
            public void success(String result) {
                Toast.makeText(MainActivity.this,"解析结果:"+result,Toast.LENGTH_SHORT).show();
            }

            @Override
            public void dile() {
                Toast.makeText(MainActivity.this,"扫描失败",Toast.LENGTH_SHORT).show();
            }
        });
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

       mPresenter.setpan(requestCode, data);

    }
}

Sendactivity 实现生成二维码

package com.example.day6;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
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.EditText;
import android.widget.ImageView;
import android.widget.Toast;

import com.uuzuche.lib_zxing.activity.CodeUtils;

public class SendActivity extends AppCompatActivity {

private EditText ed;
private Button button;
private Button button1;
private ImageView image;

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

}


private void initView() {
    ed = (EditText) findViewById(R.id.ed);
    button = (Button) findViewById(R.id.button);
    button1 = (Button) findViewById(R.id.button1);
    image = findViewById(R.id.image);

    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String textContent = ed.getText().toString();
            if (TextUtils.isEmpty(textContent)) {
                Toast.makeText(SendActivity.this, "您的输入为空!", Toast.LENGTH_SHORT).show();
                return;
            }
            ed.setText("");
             Bitmap   mBitmap = CodeUtils.createImage(textContent, 400, 400, BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher));
            image.setImageBitmap(mBitmap);
        }
    });

    button1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String textContent = ed.getText().toString();
            if (TextUtils.isEmpty(textContent)) {
                Toast.makeText(SendActivity.this, "您的输入为空!", Toast.LENGTH_SHORT).show();
                return;
            }
            ed.setText("");
            Bitmap   mBitmap = CodeUtils.createImage(textContent, 400, 400,null);
            image.setImageBitmap(mBitmap);
        }
    });
}

}