java - 通过android studio将嵌入式条形码扫描仪添加到 fragment 到我的应用程序中

Question

所以我的目标是在我的应用程序中放置一个条形码扫描器来解码条形码。我使用 ZXing 和 Zbar 找到了一些答案，但要么我自己做不到，要么答案有点过时，一半的代码不起作用。我想将扫描仪放在一个 fragment 上，然后让第一个 fragment 将解码后的条形码发送到第三个 fragment 或结果 fragment 。我有意添加了 ZXing，然后它提示我下载该应用程序，但我不想这样。

这是我的 MainActivity.java

package com.example.macdaddydarian.pricematch;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;

public class MainActivity extends FragmentActivity {


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


    ViewPager pager = (ViewPager) findViewById(R.id.viewPager);
    pager.setAdapter(new MyPagerAdapter(getSupportFragmentManager()));
}


private class MyPagerAdapter extends FragmentPagerAdapter {


    public MyPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int pos) {
        switch (pos) {

            case 0:
                return FirstFragment.newInstance("Scanner");
            case 1:
                return SecondFragment.newInstance("Location");
            case 2:
                return ThirdFragment.newInstance("Results");
            case 3:
                return FourthFragment.newInstance("User");
            default:
                return ThirdFragment.newInstance("");
        }
    }

    @Override
    public int getCount() {
        return 4;
    }
}

}

以及我希望扫描仪继续运行的 FirstFragment.java

package com.example.macdaddydarian.pricematch;

import android.graphics.Typeface;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;


public class FirstFragment extends Fragment {





@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.fragment_barcode2, container, false);



    TextView tv = (TextView) v.findViewById(R.id.tvFragFirst);
    tv.setText(getArguments().getString("msg"));


    //FONT!!!!!!!!!!!
    Typeface font = Typeface.createFromAsset(getActivity().getAssets(), "Blenda Script.ttf");
    tv.setTypeface(font);
    return v;


}

public static FirstFragment newInstance(String text) {

    FirstFragment f = new FirstFragment();
    Bundle b = new Bundle();
    b.putString("msg", text);

    f.setArguments(b);

    return f;
 }
}

以及与第一个 fragment 一起使用的 fragment_barcode2.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#1ab5ff" >

<TextView
    android:id="@+id/tvFragFirst"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:textSize="50dp"
    android:text="TextView"
    android:textColor="#FFFFFF"
    android:layout_alignParentTop="true"
    android:layout_marginTop="1dp"/>

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="New Button"
    android:id="@+id/Scanbtn"
    android:layout_centerVertical="true"
    android:layout_centerHorizontal="true" />


</RelativeLayout>

好的，这是我的 AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.macdaddydarian.pricematch" >

 <application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".MainActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

最后是 ThirdFragment.java，我希望它被发送到

package com.example.macdaddydarian.pricematch;

import android.graphics.Typeface;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

  public class ThirdFragment extends Fragment {

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, 

Bundle   

 savedInstanceState) {
    View v = inflater.inflate(R.layout.fragment_results, container, false);

    TextView tv = (TextView) v.findViewById(R.id.tvFragThird);
    tv.setText(getArguments().getString("msg"));



    //FONT!!!!!!!!!!!
  Typeface font = Typeface.createFromAsset(getActivity().getAssets(),         

 "Blenda Script.ttf");
    tv.setTypeface(font);

    return v;
}

public static ThirdFragment newInstance(String text) {

    ThirdFragment f = new ThirdFragment();
    Bundle b = new Bundle();
    b.putString("msg", text);

    f.setArguments(b);

    return f;
}
}

Answer 1

Google 最近发布了一个新的 Android Vision Api提供条形码功能。

您可以在此处查看 API 示例代码:https://github.com/googlesamples/android-vision