如何粘贴previous活动数据？ [英] How to paste data from previous activity?

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问题描述

我想在这里做一个项目，可以扫描棒code（做到这一点），之后，它应该表明基于酒吧code从数据库中的一些值（产品姓名，地址）。

我设法值从酒吧code复制到剪贴板，但我不能管理它复制到 activity_second.xml 的EditText上。

的Andr​​oidManifest.xml 

 ＆LT;？XML版本=1.0编码=UTF-8＆GT？;
         ＆LT;清单的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
             包=br.exemplozxingintegration
             安卓版code =1
             机器人：=的versionName1.0＆GT;    ＆LT;用途-SDK
        安卓的minSdkVersion =8
        机器人：targetSdkVersion =19/＆GT;    ＆LT;使用许可权的android：NAME =android.permission.CAMERA/＆GT;
    ＆LT;使用许可权的android：NAME =android.permission.INTERNET对/＆GT;
    ＆LT;使用许可权的android：NAME =android.permission.VIBRATE/＆GT;
    ＆LT;使用许可权的android：NAME =android.permission.FLASHLIGHT/＆GT;
    ＆LT;使用许可权的android：NAME =android.permission.READ_CONTACTS/＆GT;
    ＆LT;使用许可权的android：NAME =com.android.browser.permission.READ_HISTORY_BOOKMARKS/＆GT;
    ＆LT;使用许可权的android：NAME =android.permission.WRITE_EXTERNAL_STORAG​​E/＆GT;
    ＆LT;使用许可权的android：NAME =android.permission.CHANGE_WIFI_STATE/＆GT;
    ＆LT;使用许可权的android：NAME =android.permission.ACCESS_WIFI_STATE/＆GT;    ＆LT;使用许可权的android：NAME =android.permission.READ_PHONE_STATE/＆GT;
    ＆LT;使用许可权的android：NAME =android.permission.READ_EXTERNAL_STORAG​​E/＆GT;    ＆lt;应用
        机器人：allowBackup =真
        机器人：图标=@绘制/ ic_launcher
        机器人：标签=ScannerBucatarie
        机器人：主题=@风格/ AppTheme＆GT;
        ＆LT;活动
            机器人：名字=。MainActivity
            机器人：标签=ScannerBucatarie
            机器人：screenOrientation =肖像＆GT;
            ＆所述;意图滤光器＆gt;
                ＆lt;作用机器人：名字=android.intent.action.MAIN/＆GT;                ＆LT;类机器人：名字=android.intent.category.LAUNCHER/＆GT;
            ＆所述; /意图滤光器＆gt;
        ＆LT; /活性GT;
        ＆LT;活动
            机器人：名字=com.google.zxing.client.android.CaptureActivity
            机器人：configChanges =方向| keyboardHidden
            机器人：标签=ZXing ScanBar
            机器人：主题=@安卓风格/ Theme.NoTitleBar.Fullscreen
            机器人：windowSoftInputMode =stateAlwaysHidden＆GT;
            ＆所述;意图滤光器＆gt;
                ＆lt;作用机器人：名字=com.google.zxing.client.android.SCAN/＆GT;                ＆LT;类机器人：名字=android.intent.category.DEFAULT/＆GT;
            ＆所述; /意图滤光器＆gt;
        ＆LT; /活性GT;
        ＆LT;活动
            机器人：名字=。SecondActivity
            机器人：标签=@字符串/ title_activity_second＆GT;＆LT; /活性GT;
    ＆LT; /用途＆gt;＆LT; /清单＆GT;

Config.java 

 包br.exemplozxingintegration;/ **
 *创建者Boghy于2016年2月9日。
 * /
公共类配置{
    公共静态最后弦乐DATA_URL =htt​​p://192.168.94.1/test/getData.php?id=;
    公共静态最后弦乐KEY_NAME =名;
    公共静态最后弦乐KEY_ADDRESS =地址;
    公共静态最后弦乐KEY_VC =VC;
    公共静态最后弦乐JSON_ARRAY =结果;
}

SecondActivity.java 

 包br.exemplozxingintegration;进口android.app.ProgressDialog;
进口android.os.Bundle;
进口android.support.v7.app.AppCompatActivity;
进口android.view.View;
进口android.widget.Button;
进口android.widget.EditText;
进口android.widget.TextView;
进口android.widget.Toast;进口com.android.volley.RequestQueue;
进口com.android.volley.Response;
进口com.android.volley.VolleyError;
进口com.android.volley.toolbox.StringRequest;
进口com.android.volley.toolbox.Volley;进口org.json.JSONArray;
进口org.json.JSONException;
进口org.json.JSONObject;公共类SecondActivity扩展AppCompatActivity实现View.OnClickListener {    私人的EditText editTextId;
    私人按钮buttonGet;
    私人TextView的textViewResult;    私人ProgressDialog负荷;    @覆盖
    保护无效的onCreate（捆绑savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.activity_main）;        editTextId =（EditText上）findViewById（R.id.editTextId）;
        buttonGet =（按钮）findViewById（R.id.buttonGet）;
        textViewResult =（的TextView）findViewById（R.id.textViewResult）;        buttonGet.setOnClickListener（本）;
    }    私人无效的getData（）{
        。字符串ID = editTextId.getText（）的toString（）修剪（）;
        如果（id.equals（））{
            Toast.makeText（这一点，请输入ID，Toast.LENGTH_LONG）.show（）;
            返回;
        }
        装载= ProgressDialog.show（这一点，请稍候...，读取...，假的，假的）;        。字符串URL = Config.DATA_URL + editTextId.getText（）的toString（）修剪（）;        StringRequest stringRequest =新StringRequest（网址，新Response.Listener＆LT;串GT;（）{
            @覆盖
            公共无效onResponse（字符串响应）{
                loading.dismiss（）;
                showJSON（响应）;
            }
        }，
                新Response.ErrorListener（）{
                    @覆盖
                    公共无效onErrorResponse（VolleyError错误）{
                        Toast.makeText（SecondActivity.this，error.getMessage（）的toString（），Toast.LENGTH_LONG。）.show（）;
                    }
                }）;        请求队列请求队列= Volley.newRequestQueue（本）;
        requestQueue.add（stringRequest）;
    }    私人无效showJSON（字符串响应）{
        字符串名称=;
        字符串的地址=;
        字符串VC =;
        尝试{
            的JSONObject的JSONObject =新的JSONObject（响应）;
            JSONArray结果= jsonObject.getJSONArray（Config.JSON_ARRAY）;
            的JSONObject collegeData = result.getJSONObject（0）;
            名称= collegeData.getString（Config.KEY_NAME）;
            地址= collegeData.getString（Config.KEY_ADDRESS）;
            VC = collegeData.getString（Config.KEY_VC）;
        }赶上（JSONException E）{
            e.printStackTrace（）;
        }
        textViewResult.setText（姓名：\\ t+名字+\\ n地址：\\ t+地址+\\ nVice校长：\\ t+ VC）;
    }    @覆盖
    公共无效的onClick（视图v）{
        的getData（）;
    }
}`AndroidManifet.xml
 ＆LT; XML版本=1.0编码=UTF-8＆GT？;
    ＆LT;清单的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
        包=br.exemplozxingintegration
        安卓版code =1
        机器人：=的versionName1.0＆GT;        ＆LT;用途-SDK
            安卓的minSdkVersion =8
            机器人：targetSdkVersion =19/＆GT;        ＆LT;使用许可权的android：NAME =android.permission.CAMERA/＆GT;
        ＆LT;使用许可权的android：NAME =android.permission.INTERNET对/＆GT;
        ＆LT;使用许可权的android：NAME =android.permission.VIBRATE/＆GT;
        ＆LT;使用许可权的android：NAME =android.permission.FLASHLIGHT/＆GT;
        ＆LT;使用许可权的android：NAME =android.permission.READ_CONTACTS/＆GT;
        ＆LT;使用许可权的android：NAME =com.android.browser.permission.READ_HISTORY_BOOKMARKS/＆GT;
        ＆LT;使用许可权的android：NAME =android.permission.WRITE_EXTERNAL_STORAG​​E/＆GT;
        ＆LT;使用许可权的android：NAME =android.permission.CHANGE_WIFI_STATE/＆GT;
        ＆LT;使用许可权的android：NAME =android.permission.ACCESS_WIFI_STATE/＆GT;        ＆LT;使用许可权的android：NAME =android.permission.READ_PHONE_STATE/＆GT;
        ＆LT;使用许可权的android：NAME =android.permission.READ_EXTERNAL_STORAG​​E/＆GT;
Config.java    包br.exemplozxingintegration;    / **
     *创建者Boghy于2016年2月9日。
     * /
    公共类配置{
        公共静态最后弦乐DATA_URL =htt​​p://192.168.94.1/test/getData.php?id=;
        公共静态最后弦乐KEY_NAME =名;
        公共静态最后弦乐KEY_ADDRESS =地址;
        公共静态最后弦乐KEY_VC =VC;
        公共静态最后弦乐JSON_ARRAY =结果;
    }

activity_second.xml 

 ＆LT; LinearLayout中的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
    的xmlns：工具=htt​​p://schemas.android.com/tool​​s的android：layout_width =match_parent
    机器人：方向=垂直
    机器人：layout_height =match_parent机器人：paddingLeft =@扪/ activity_horizo​​ntal_margin
    机器人：paddingRight =@扪/ activity_horizo​​ntal_margin
    机器人：paddingTop =@扪/ activity_vertical_margin
    机器人：paddingBottom会=@扪/ activity_vertical_margin工具：上下文=SecondActivity。＆GT;    ＆LT;的LinearLayout
        机器人：方向=横向
        机器人：layout_width =match_parent
        机器人：layout_height =WRAP_CONTENT＆GT;        ＆LT;的EditText
            机器人：ID =@ + ID / txRes​​ult
            机器人：layout_width =WRAP_CONTENT
            机器人：layout_height =WRAP_CONTENT
            机器人：layout_weight =1/＆GT;
        ＆LT;按钮
            机器人：ID =@ + ID / buttonGet
            机器人：文字=GET
            机器人：layout_width =WRAP_CONTENT
            机器人：layout_height =WRAP_CONTENT/＆GT;    ＆LT; / LinearLayout中＆GT;
    ＆LT;的TextView
        机器人：ID =@ + ID / textViewResult
        机器人：layout_width =FILL_PARENT
        机器人：layout_height =FILL_PARENT/＆GT;＆LT; / LinearLayout中＆GT;

activity_main.xml中 

 ＆LT; LinearLayout中的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
    的xmlns：工具=htt​​p://schemas.android.com/tool​​s
    机器人：ID =@ + ID / LinearLayout1
    机器人：layout_width =match_parent
    机器人：layout_height =match_parent
    机器人：方向=垂直
    机器人：weightSum =1＆GT;    ＆LT;查看
        机器人：layout_width =match_parent
        机器人：layout_height =1DP
        机器人：layout_marginTop =10dp
        机器人：layout_marginBottom =10dp
        机器人：背景=＃DDD/＆GT;    ＆LT;按钮
        机器人：layout_width =match_parent
        机器人：layout_height =WRAP_CONTENT
        机器人：文字=扫描
        安卓的onClick =callZXing
        机器人：ID =@ + ID /按钮/＆GT;    ＆LT;查看
        机器人：layout_width =match_parent
        机器人：layout_height =1DP
        机器人：layout_marginTop =10dp
        机器人：layout_marginBottom =10dp
        机器人：背景=＃DDD/＆GT;    ＆LT;的TextView
        机器人：ID =@ + ID / txRes​​ult
        机器人：layout_width =match_parent
        机器人：layout_height =WRAP_CONTENT
        机器人：文字=Rezultat：
        机器人：TEXTSIZE =20SP/＆GT;    ＆LT;的TextView
        机器人：layout_width =WRAP_CONTENT
        机器人：layout_height =WRAP_CONTENT
        机器人：textAppearance =机器人：ATTR / textAppearanceLarge
        机器人：文字=这是正确的code？
        机器人：ID =@ + ID / TextView的
        机器人：layout_marginTop =70dp
        机器人：layout_gravity =CENTER_HORIZONTAL/＆GT;    ＆LT;按钮
        风格=@风格/ CaptureTheme
        机器人：layout_width =112dp
        机器人：layout_height =68dp
        机器人：文字=是
        机器人：layout_marginTop =30dp
        机器人：ID =@ + ID /按钮2
        机器人：layout_weight =0.10
        机器人：layout_gravity =CENTER_HORIZONTAL
        安卓的onClick =sendSecond/＆GT;    ＆LT;按钮
        风格=@风格/ CaptureTheme
        机器人：layout_width =112dp
        机器人：layout_height =68dp
        机器人：文字=否
        机器人：layout_marginTop =10dp
        机器人：ID =@ + ID /按钮1
        机器人：layout_weight =0.10
        机器人：layout_gravity =CENTER_HORIZONTAL
        安卓的onClick =callZXing/＆GT;＆LT; / LinearLayout中＆GT;
 SecondActivity.java包br.exemplozxingintegration;进口android.app.ProgressDialog;
进口android.os.Bundle;
进口android.support.v7.app.AppCompatActivity;
进口android.view.View;
进口android.widget.Button;
进口android.widget.EditText;
进口android.widget.TextView;
进口android.widget.Toast;进口com.android.volley.RequestQueue;
进口com.android.volley.Response;
进口com.android.volley.VolleyError;
进口com.android.volley.toolbox.StringRequest;
进口com.android.volley.toolbox.Volley;进口org.json.JSONArray;
进口org.json.JSONException;
进口org.json.JSONObject;公共类SecondActivity扩展AppCompatActivity实现View.OnClickListener {    私人的EditText editTextId;
    私人按钮buttonGet;
    私人TextView的textViewResult;    私人ProgressDialog负荷;    @覆盖
    保护无效的onCreate（捆绑savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.activity_main）;        editTextId =（EditText上）findViewById（R.id.editTextId）;
        buttonGet =（按钮）findViewById（R.id.buttonGet）;
        textViewResult =（的TextView）findViewById（R.id.textViewResult）;        buttonGet.setOnClickListener（本）;
    }    私人无效的getData（）{
        。字符串ID = editTextId.getText（）的toString（）修剪（）;
        如果（id.equals（））{
            Toast.makeText（这一点，请输入ID，Toast.LENGTH_LONG）.show（）;
            返回;
        }
        装载= ProgressDialog.show（这一点，请稍候...，读取...，假的，假的）;        。字符串URL = Config.DATA_URL + editTextId.getText（）的toString（）修剪（）;        StringRequest stringRequest =新StringRequest（网址，新Response.Listener＆LT;串GT;（）{
            @覆盖
            公共无效onResponse（字符串响应）{
                loading.dismiss（）;
                showJSON（响应）;
            }
        }，
                新Response.ErrorListener（）{
                    @覆盖
                    公共无效onErrorResponse（VolleyError错误）{
                        Toast.makeText（SecondActivity.this，error.getMessage（）的toString（），Toast.LENGTH_LONG。）.show（）;
                    }
                }）;        请求队列请求队列= Volley.newRequestQueue（本）;
        requestQueue.add（stringRequest）;
    }    私人无效showJSON（字符串响应）{
        字符串名称=;
        字符串的地址=;
        字符串VC =;
        尝试{
            的JSONObject的JSONObject =新的JSONObject（响应）;
            JSONArray结果= jsonObject.getJSONArray（Config.JSON_ARRAY）;
            的JSONObject collegeData = result.getJSONObject（0）;
            名称= collegeData.getString（Config.KEY_NAME）;
            地址= collegeData.getString（Config.KEY_ADDRESS）;
            VC = collegeData.getString（Config.KEY_VC）;
        }赶上（JSONException E）{
            e.printStackTrace（）;
        }
        textViewResult.setText（姓名：\\ t+名字+\\ n地址：\\ t+地址+\\ nVice校长：\\ t+ VC）;
    }    @覆盖
    公共无效的onClick（视图v）{
        的getData（）;
    }
}


解决方案

由于@Mohammed卡尔玛解释，你必须发送ID作为额外的意向（无需将其复制到剪贴板）。我相信你已经创造了这个意图，但我重新创建它。有想法，我不知道你选择了你的意图的名字，所以我叫它'我'。

在您的MainActivity.java：

 意向书I =新意图（MainActivity.class，SecondActivity.java）;
i.putExtra（栏code，txtResult.getText（）的toString（））;
startActivity（ⅰ）;

在您的SecondActivity.java：

  textViewResult =（的TextView）findViewById（R.id.textViewResult）;
    串吧code = getIntent（）getStringExtra（栏code）。
    textViewResult.setText（巴code）;

I'm trying here to make a project, that can scan a barcode (that is done), and after that it's supposed to show some values from a database based on that barcode (product name, address).

I manage to copy the value from the barcode to the clipboard, but then I cannot manage to copy it to the activity_second.xml's EditText.

AndroidManifest.xml 

<?xml version="1.0" encoding="utf-8"?>
         <manifest xmlns:android="http://schemas.android.com/apk/res/android"
             package="br.exemplozxingintegration"
             android:versionCode="1"
             android:versionName="1.0">

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.FLASHLIGHT" />
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="com.android.browser.permission.READ_HISTORY_BOOKMARKS" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="ScannerBucatarie"
        android:theme="@style/AppTheme">
        <activity
            android:name=".MainActivity"
            android:label="ScannerBucatarie"
            android:screenOrientation="portrait">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.google.zxing.client.android.CaptureActivity"
            android:configChanges="orientation|keyboardHidden"
            android:label="ZXing ScanBar"
            android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
            android:windowSoftInputMode="stateAlwaysHidden">
            <intent-filter>
                <action android:name="com.google.zxing.client.android.SCAN" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".SecondActivity"
            android:label="@string/title_activity_second"></activity>
    </application>

</manifest>

Config.java

package br.exemplozxingintegration;

/**
 * Created by Boghy on 09.02.2016.
 */
public class Config {
    public static final String DATA_URL = "http://192.168.94.1/test/getData.php?id=";
    public static final String KEY_NAME = "name";
    public static final String KEY_ADDRESS = "address";
    public static final String KEY_VC = "vc";
    public static final String JSON_ARRAY = "result";
}

SecondActivity.java

package br.exemplozxingintegration;

import android.app.ProgressDialog;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

public class SecondActivity extends AppCompatActivity implements View.OnClickListener {

    private EditText editTextId;
    private Button buttonGet;
    private TextView textViewResult;

    private ProgressDialog loading;

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

        editTextId = (EditText) findViewById(R.id.editTextId);
        buttonGet = (Button) findViewById(R.id.buttonGet);
        textViewResult = (TextView) findViewById(R.id.textViewResult);

        buttonGet.setOnClickListener(this);
    }

    private void getData() {
        String id = editTextId.getText().toString().trim();
        if (id.equals("")) {
            Toast.makeText(this, "Please enter an id", Toast.LENGTH_LONG).show();
            return;
        }
        loading = ProgressDialog.show(this,"Please wait...","Fetching...",false,false);

        String url = Config.DATA_URL+editTextId.getText().toString().trim();

        StringRequest stringRequest = new StringRequest(url, new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                loading.dismiss();
                showJSON(response);
            }
        },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Toast.makeText(SecondActivity.this,error.getMessage().toString(),Toast.LENGTH_LONG).show();
                    }
                });

        RequestQueue requestQueue = Volley.newRequestQueue(this);
        requestQueue.add(stringRequest);
    }

    private void showJSON(String response){
        String name="";
        String address="";
        String vc = "";
        try {
            JSONObject jsonObject = new JSONObject(response);
            JSONArray result = jsonObject.getJSONArray(Config.JSON_ARRAY);
            JSONObject collegeData = result.getJSONObject(0);
            name = collegeData.getString(Config.KEY_NAME);
            address = collegeData.getString(Config.KEY_ADDRESS);
            vc = collegeData.getString(Config.KEY_VC);
        } catch (JSONException e) {
            e.printStackTrace();
        }
        textViewResult.setText("Name:\t"+name+"\nAddress:\t" +address+ "\nVice Chancellor:\t"+ vc);
    }

    @Override
    public void onClick(View v) {
        getData();
    }
}`    AndroidManifet.xml 
 <?xml version="1.0" encoding="utf-8"?>
    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="br.exemplozxingintegration"
        android:versionCode="1"
        android:versionName="1.0">

        <uses-sdk
            android:minSdkVersion="8"
            android:targetSdkVersion="19" />

        <uses-permission android:name="android.permission.CAMERA" />     
        <uses-permission android:name="android.permission.INTERNET" />
        <uses-permission android:name="android.permission.VIBRATE" />
        <uses-permission android:name="android.permission.FLASHLIGHT" />
        <uses-permission android:name="android.permission.READ_CONTACTS" />
        <uses-permission android:name="com.android.browser.permission.READ_HISTORY_BOOKMARKS" />
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
        <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
        <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

        <uses-permission android:name="android.permission.READ_PHONE_STATE" />
        <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />


Config.java

    package br.exemplozxingintegration;

    /**
     * Created by Boghy on 09.02.2016.
     */
    public class Config {
        public static final String DATA_URL = "http://192.168.94.1/test/getData.php?id=";
        public static final String KEY_NAME = "name";
        public static final String KEY_ADDRESS = "address";
        public static final String KEY_VC = "vc";
        public static final String JSON_ARRAY = "result";
    }

activity_second.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".SecondActivity">

    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <EditText
            android:id="@+id/txResult"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"/>
        <Button
            android:id="@+id/buttonGet"
            android:text="Get"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

    </LinearLayout>
    <TextView
        android:id="@+id/textViewResult"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" />

</LinearLayout>

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:weightSum="1">

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginTop="10dp"
        android:layout_marginBottom="10dp"
        android:background="#ddd" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Scan"
        android:onClick="callZXing"
        android:id="@+id/Button" />

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginTop="10dp"
        android:layout_marginBottom="10dp"
        android:background="#ddd" />

    <TextView
        android:id="@+id/txResult"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Rezultat:"
        android:textSize="20sp" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="Is this the correct code?"
        android:id="@+id/textView"
        android:layout_marginTop="70dp"
        android:layout_gravity="center_horizontal" />

    <Button
        style="@style/CaptureTheme"
        android:layout_width="112dp"
        android:layout_height="68dp"
        android:text="Yes"
        android:layout_marginTop="30dp"
        android:id="@+id/button2"
        android:layout_weight="0.10"
        android:layout_gravity="center_horizontal"
        android:onClick="sendSecond" />

    <Button
        style="@style/CaptureTheme"
        android:layout_width="112dp"
        android:layout_height="68dp"
        android:text="No"
        android:layout_marginTop="10dp"
        android:id="@+id/button1"
        android:layout_weight="0.10"
        android:layout_gravity="center_horizontal"
        android:onClick="callZXing" />

</LinearLayout>
 SecondActivity.java

package br.exemplozxingintegration;

import android.app.ProgressDialog;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

public class SecondActivity extends AppCompatActivity implements View.OnClickListener {

    private EditText editTextId;
    private Button buttonGet;
    private TextView textViewResult;

    private ProgressDialog loading;

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

        editTextId = (EditText) findViewById(R.id.editTextId);
        buttonGet = (Button) findViewById(R.id.buttonGet);
        textViewResult = (TextView) findViewById(R.id.textViewResult);

        buttonGet.setOnClickListener(this);
    }

    private void getData() {
        String id = editTextId.getText().toString().trim();
        if (id.equals("")) {
            Toast.makeText(this, "Please enter an id", Toast.LENGTH_LONG).show();
            return;
        }
        loading = ProgressDialog.show(this,"Please wait...","Fetching...",false,false);

        String url = Config.DATA_URL+editTextId.getText().toString().trim();

        StringRequest stringRequest = new StringRequest(url, new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                loading.dismiss();
                showJSON(response);
            }
        },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Toast.makeText(SecondActivity.this,error.getMessage().toString(),Toast.LENGTH_LONG).show();
                    }
                });

        RequestQueue requestQueue = Volley.newRequestQueue(this);
        requestQueue.add(stringRequest);
    }

    private void showJSON(String response){
        String name="";
        String address="";
        String vc = "";
        try {
            JSONObject jsonObject = new JSONObject(response);
            JSONArray result = jsonObject.getJSONArray(Config.JSON_ARRAY);
            JSONObject collegeData = result.getJSONObject(0);
            name = collegeData.getString(Config.KEY_NAME);
            address = collegeData.getString(Config.KEY_ADDRESS);
            vc = collegeData.getString(Config.KEY_VC);
        } catch (JSONException e) {
            e.printStackTrace();
        }
        textViewResult.setText("Name:\t"+name+"\nAddress:\t" +address+ "\nVice Chancellor:\t"+ vc);
    }

    @Override
    public void onClick(View v) {
        getData();
    }
}

解决方案

As @Mohammed Kharma explained, you must send the id as an Intent extra (no need to copy it to the clipboard). I believe you already created this Intent, but I'm recreating it. Have in mind that I don't know the name you chose for your intent, so I'll just call it 'i'.

On your MainActivity.java: 

Intent i= new Intent(MainActivity.class,SecondActivity.java);
i.putExtra("barcode",txtResult.getText().toString());
startActivity(i);

On your SecondActivity.java:

    textViewResult = (TextView) findViewById(R.id.textViewResult);
    String barcode=getIntent().getStringExtra("barcode");
    textViewResult.setText(barcode);

这篇关于如何粘贴previous活动数据？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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