实例介绍
【实例简介】
PDA系统为android,该项目主要是实现条形码解读。
【实例截图】【核心代码】
package com.example.administrator.barcode2ds;
import android.Manifest;
import android.annotation.SuppressLint;
import android.app.ProgressDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Vibrator;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.Toast;
import com.rscja.deviceapi.RFIDWithISO14443A;
import com.zebra.adc.decoder.Barcode2DWithSoft;
import java.io.UnsupportedEncodingException;
/*
new demo 20171212
*/
public class MainActivity extends AppCompatActivity {
String TAG="MainActivity";
String barCode="";
EditText data1;
Button btn;
Barcode2DWithSoft barcode2DWithSoft=null;
String seldata="ASCII";
private ArrayAdapter adapterTagType;
private Spinner spTagType;
HomeKeyEventBroadCastReceiver receiver;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
barcode2DWithSoft=Barcode2DWithSoft.getInstance();
//receiver = new HomeKeyEventBroadCastReceiver();
//registerReceiver(receiver, new IntentFilter("com.rscja.android.KEY_DOWN"));
data1= (EditText) findViewById(R.id.editText);
btn=(Button)findViewById(R.id.button);
spTagType=(Spinner)findViewById(R.id.spTagType);
adapterTagType = ArrayAdapter.createFromResource(this,
R.array.arrayTagType, android.R.layout.simple_spinner_item);
adapterTagType
.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spTagType.setAdapter(adapterTagType);
spTagType.setSelection(1);
spTagType.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> adapterView, View view,
int position, long id) {
//获取选中值
Spinner spinner = (Spinner) adapterView;
seldata = (String) spinner.getItemAtPosition(position);
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
ScanBarcode();
}
});
// new InitTask().execute();
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
if (barcode2DWithSoft != null) {
new InitTask().execute();
}
super.onResume();
}
@Override
protected void onPause() {
barcode2DWithSoft.close();
super.onPause();
}
@Override
protected void onDestroy() {
Log.i(TAG,"onDestroy");
if(barcode2DWithSoft!=null){
barcode2DWithSoft.stopScan();
barcode2DWithSoft.close();
}
super.onDestroy();
//android.os.Process.killProcess(Process.myPid());
}
public Barcode2DWithSoft.ScanCallback ScanBack= new Barcode2DWithSoft.ScanCallback(){
@Override
public void onScanComplete(int i, int length, byte[] bytes) {
if (length < 1) {
if (length == -1) {
data1.setText("Scan cancel");
} else if (length == 0) {
data1.setText("Scan TimeOut");
} else {
Log.i(TAG,"Scan fail");
}
}else{
SoundManage.PlaySound(MainActivity.this, SoundManage.SoundType.SUCCESS);
barCode="";
// String res = new String(dd,"gb2312");
try {
Log.i("Ascii",seldata);
barCode = new String(bytes, 0, length, seldata);
zt();
}
catch (UnsupportedEncodingException ex) {}
data1.setText(barCode);
}
}
};
void zt() {
Vibrator vibrator = (Vibrator)this.getSystemService(this.VIBRATOR_SERVICE);
vibrator.vibrate(100);
}
private void ScanBarcode(){
if(barcode2DWithSoft!=null) {
Log.i(TAG,"ScanBarcode");
barcode2DWithSoft.scan();
barcode2DWithSoft.setScanCallback(ScanBack);
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode==139 || keyCode==280){
if(event.getRepeatCount()==0) {
ScanBarcode();
return true;
}
}
return super.onKeyDown(keyCode, event);
}
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
if(keyCode==139 || keyCode==280){
if(event.getRepeatCount()==0) {
barcode2DWithSoft.stopScan();
return true;
}
}
return super.onKeyUp(keyCode, event);
}
public class InitTask extends AsyncTask<String, Integer, Boolean> {
ProgressDialog mypDialog;
@Override
protected Boolean doInBackground(String... params) {
// TODO Auto-generated method stub
boolean reuslt=false;
if(barcode2DWithSoft!=null) {
reuslt= barcode2DWithSoft.open(MainActivity.this);
Log.i(TAG,"open=" reuslt);
}
return reuslt;
}
@Override
protected void onPostExecute(Boolean result) {
super.onPostExecute(result);
if(result){
// barcode2DWithSoft.setParameter(324, 1);
// barcode2DWithSoft.setParameter(300, 0); // Snapshot Aiming
// barcode2DWithSoft.setParameter(361, 0); // Image Capture Illumination
// interleaved 2 of 5
barcode2DWithSoft.setParameter(6, 1);
barcode2DWithSoft.setParameter(22, 0);
barcode2DWithSoft.setParameter(23, 55);
barcode2DWithSoft.setParameter(402, 1);
Toast.makeText(MainActivity.this,"Success",Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(MainActivity.this,"fail",Toast.LENGTH_SHORT).show();
}
mypDialog.cancel();
}
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
mypDialog = new ProgressDialog(MainActivity.this);
mypDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
mypDialog.setMessage("init...");
mypDialog.setCanceledOnTouchOutside(false);
mypDialog.show();
}
}
class HomeKeyEventBroadCastReceiver extends BroadcastReceiver {
static final String SYSTEM_REASON = "reason";
static final String SYSTEM_HOME_KEY = "homekey";//home key
static final String SYSTEM_RECENT_APPS = "recentapps";//long home key
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals("com.rscja.android.KEY_DOWN")) {
int reason = intent.getIntExtra("Keycode",0);
//getStringExtra
boolean long1 = intent.getBooleanExtra("Pressed",false);
// home key处理点
if(reason==280 || reason==66){
ScanBarcode();
}
// Toast.makeText(getApplicationContext(), "home key=" reason ",long1=" long1, Toast.LENGTH_SHORT).show();
}
}
}
}
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