通过 android studio 将嵌入式条形码扫描仪添加到我的应用程序片段中
Add an embedded barcode scanner onto fragment into my app via android studio
所以我的目标是在我的应用程序上安装一个条码扫描器来解码条码。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片段上,然后让第一个片段将解码后的条形码发送到第三个片段或结果片段。我有意添加了 ZXing,然后它提示我下载该应用程序,但我不想那样。
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;
}
}
以及与第一个片段一起出现的 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 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;
}
}
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 的示例代码:https://github.com/googlesamples/android-vision
所以我的目标是在我的应用程序上安装一个条码扫描器来解码条码。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片段上,然后让第一个片段将解码后的条形码发送到第三个片段或结果片段。我有意添加了 ZXing,然后它提示我下载该应用程序,但我不想那样。
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;
}
}
以及与第一个片段一起出现的 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 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;
}
}
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 的示例代码:https://github.com/googlesamples/android-vision