我有一个程序可以将数据从 android 手机发送到移动打印蓝牙。我的代码有问题。发生运行时错误。我无法分析它。请帮忙。非常感谢
这是我的代码示例：
private static final String TAG = "Test";
static final private int PrintText_ID = Menu.FIRST + 1;
static final private int PrintBarcode_ID = Menu.FIRST + 2;
static final private int LineFeed_ID = Menu.FIRST + 3;
static final private int SetCharacterSet_ID = Menu.FIRST + 4;
static final private int Connect_ID = Menu.FIRST + 5;
static final private int Disconnect_ID = Menu.FIRST + 6;
static final private int GetStatus_ID = Menu.FIRST + 7;
static final private int GetPowerStatus_ID = Menu.FIRST + 8;
static final private int Directio_ID = Menu.FIRST + 9;
static final private int MsrTrack1_ID = Menu.FIRST + 10;
static final private int MsrTrack2_ID = Menu.FIRST + 11;
static final private int MsrTrack3_ID = Menu.FIRST + 12;
static final private int MsrTrack12_ID = Menu.FIRST + 13;
static final private int MsrTrack23_ID = Menu.FIRST + 14;
static final private int PrintText1K_ID = Menu.FIRST + 15;
private ZQPrinter PrinterService = null;
private boolean conn = false;
private byte dataBar[] ={0x38, 0x38, 0x30, 0x31, 0x31, 0x31, 0x35, 0x31, 0x31}; //"JAN13(EAN) 8801115114031"
private byte dataBar2[] ={0x38, 0x38, 0x30, 0x31, 0x31};
private byte dataBar3[] = {0x31,0x32,0x33,0x34,0x35,0x36,0x37};
String PrintTextSample="ABCDEFGabcdefg123456!@#$%^\r\n";
public ZQExample()
{
Log.e(TAG, "+++ ON Contructor +++");
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
CheckGC("onCreate_Start" );
Log.e(TAG, "+++ ON CREATE +++");
setContentView(R.layout.main);
TextView t = (TextView) findViewById(R.id.text);
registerForContextMenu(t);
PrinterService = new ZQPrinter();
CheckGC("onCreate_End" );
}
@Override
public void onStart() {
super.onStart();
CheckGC("onStart_Start" );
TextView t = (TextView) findViewById(R.id.text);
t.setText("");
t.append("AM-3XM EXAMPLE\n\n");
t.append("do long press on touchscreen\n");
Log.e(TAG, "++ ON START ++");
CheckGC("onStart_End" );
}
@Override
public synchronized void onResume() {
super.onResume();
Log.e(TAG, "+ ON RESUME +");
CheckGC("onResume_End" );
}
@Override
public synchronized void onPause() {
super.onPause();
Log.e(TAG, "- ON PAUSE -");
CheckGC("onPause_End" );
}
@Override
public void onStop() {
super.onStop();
Log.e(TAG, "-- ON STOP --");
CheckGC("onStop_End" );
// defense code for HTC Desire because of reconnect' fail
// Runtime.getRuntime().exit(0);
}
@Override
public void onDestroy() {
Log.e(TAG, "--- ON DESTROY ---");
super.onDestroy();
if(PrinterService != null)
{
PrinterService.Disconnect();
PrinterService = null;
}
CheckGC("onDestroy_End" );
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
CheckGC("onCreateContextMenu_Start" );
if (conn == false) {
menu.add(0, Connect_ID, 0, "Connect");
}
else {
menu.add(0, Disconnect_ID, 0, "Disconnect");
menu.add(0, PrintText_ID, 0, "PrintText");
menu.add(0, PrintText1K_ID, 0, "PrintText1K");
menu.add(0, PrintBarcode_ID, 0, "PrintBarcode");
menu.add(0, LineFeed_ID , 0, "LineFeed");
menu.add(0, GetStatus_ID , 0, "GetStatus");
menu.add(0, GetPowerStatus_ID, 0, "GetPowerStatus");
menu.add(0, Directio_ID, 0, "Directio");
menu.add(0, MsrTrack1_ID, 0, "MsrTrack1");
menu.add(0, MsrTrack2_ID, 0, "MsrTrack2");
menu.add(0, MsrTrack3_ID, 0, "MsrTrack3");
menu.add(0, MsrTrack12_ID, 0, "MsrTrack12");
menu.add(0, MsrTrack23_ID, 0, "MsrTrack23");
menu.add(0, SetCharacterSet_ID, 0, "SetCharacterSet");
}
CheckGC("onCreateContextMenu_End" );
}
public boolean onContextItemSelected(MenuItem item) {
int returevlaue=ZQPrinter.AB_SUCCESS;
TextView t = (TextView) findViewById(R.id.text);
switch (item.getItemId()) {
case Connect_ID:
CheckGC("Connect_Start" );
t.setText("");
t.append("Connect...\n");
int nRet = PrinterService.Connect("00:1F:B7:03:C8:05");
if ( nRet == 0 ) {
t.append("Success\n");
conn = true;
}
else {
Log.e("Test", String.valueOf(nRet));
t.append("Fail\n\n");
Toast.makeText(ZQExample.this,"check printer & bluetooth",Toast.LENGTH_SHORT).show();
conn = false;
}
t.append("do long press on touchscreen\n");
CheckGC("Connect_End" );
//////
return true;
case Disconnect_ID:
CheckGC("Disconnect_Start" );
t.setText("");
t.append("Disconnect...\n");
PrinterService.Disconnect();
PrinterService = null;
t.append("Success\n\n");
t.append("do long press on touchscreen\n");
conn = false;
CheckGC("Disconnect_End" );
return true;
case PrintText_ID:
CheckGC("PrintText_Start" );
t.setText("");
t.append("PrintText...\n");
//////
System.setProperty("file.encoding", "gb2312");
String str = "²âÊÔ´òÓ¡¼òÌå\r\n";
PrinterService.PrintText(str, ZQPrinter.ALIGNMENT_LEFT, ZQPrinter.FT_DEFAULT, 0);
//////
System.setProperty("file.encoding", "big5");
String str2 = "œyÔ‡´òÓ¡·±ów\r\n";
PrinterService.PrintText(str2, ZQPrinter.ALIGNMENT_LEFT, ZQPrinter.FT_DEFAULT, 0);
//////////
returevlaue=PrinterService.GetStatus();
if(returevlaue==ZQPrinter.AB_SUCCESS){
for(int i=0 ; i<50;i++)
{
returevlaue=PrinterService.PrintText(PrintTextSample,
ZQPrinter.ALIGNMENT_LEFT,
ZQPrinter.FT_DEFAULT,
ZQPrinter.TS_0WIDTH | ZQPrinter.TS_0HEIGHT );
CheckGC("PrintText_Loop" );
if(returevlaue!=ZQPrinter.AB_SUCCESS)
{
break;
}
}
}
if(returevlaue==ZQPrinter.AB_SUCCESS){
returevlaue=PrinterService.LineFeed(5);
}
returevlaue=PrinterService.GetStatus();
if(returevlaue==ZQPrinter.AB_SUCCESS){
t.append("Success\n\n");
}else{
t.append("Fail\n\n");
String tem_buffer=new String();
tem_buffer="ERROR ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
}
t.append("\n do long press on touchscreen\n");
CheckGC("PrintText_End" );
return true;
case PrintBarcode_ID :
CheckGC("PrintBarcode_Start" );
t.setText("");
t.append("PrintBarcode...\n");
returevlaue=PrinterService.GetStatus();
if(returevlaue==ZQPrinter.AB_SUCCESS){
returevlaue=PrinterService.PrintBarcode(dataBar ,dataBar.length , ZQPrinter.BCS_JAN13, 50, 3, ZQPrinter.ALIGNMENT_LEFT, ZQPrinter.BC_TEXT_BELOW);
}
if(returevlaue==ZQPrinter.AB_SUCCESS){
returevlaue=PrinterService.LineFeed(1);
}
if(returevlaue==ZQPrinter.AB_SUCCESS){
returevlaue=PrinterService.PrintBarcode(dataBar2,dataBar2.length, ZQPrinter.BCS_JAN8, 50, 3, ZQPrinter.ALIGNMENT_LEFT, ZQPrinter.BC_TEXT_BELOW);
}
if(returevlaue==ZQPrinter.AB_SUCCESS){
returevlaue=PrinterService.LineFeed(1);
}
if(returevlaue==ZQPrinter.AB_SUCCESS){
returevlaue=PrinterService.PrintBarcode(dataBar3 ,dataBar3.length , ZQPrinter.BCS_Code39, 50, 3, ZQPrinter.ALIGNMENT_LEFT, ZQPrinter.BC_TEXT_BELOW);
}
if(returevlaue==ZQPrinter.AB_SUCCESS){
returevlaue=PrinterService.LineFeed(1);
}
if(returevlaue==ZQPrinter.AB_SUCCESS){
returevlaue=PrinterService.PrintBarcode(dataBar3, dataBar3.length, ZQPrinter.BCS_Code128, 50, 3, ZQPrinter.ALIGNMENT_LEFT, ZQPrinter.BC_TEXT_BELOW);
}
if(returevlaue==ZQPrinter.AB_SUCCESS){
returevlaue=PrinterService.LineFeed(1);
}
returevlaue=PrinterService.GetStatus();
if(returevlaue==ZQPrinter.AB_SUCCESS){
t.append("Success\n\n");
}else{
t.append("Fail\n\n");
String tem_buffer=new String();
tem_buffer="ERROR ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
}
t.append("\n do long press on touchscreen\n");
CheckGC("PrintBarcode_End" );
return true;
case LineFeed_ID :
CheckGC("LineFeed_Start" );
t.setText("");
t.append("LineFeed...\n");
returevlaue=PrinterService.GetStatus();
if(returevlaue==ZQPrinter.AB_SUCCESS){
returevlaue=PrinterService.LineFeed(5);
}
returevlaue=PrinterService.GetStatus();
if(returevlaue==ZQPrinter.AB_SUCCESS){
t.append("Success\n\n");
}else{
t.append("Fail\n\n");
String tem_buffer=new String();
tem_buffer="ERROR ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
}
t.append("\n do long press on touchscreen\n");
CheckGC("LineFeed_End" );
return true;
case GetStatus_ID:
CheckGC("GetStatus_Start" );
t.setText("");
t.append("GetStatus...\n");
returevlaue=PrinterService.GetStatus();
if(returevlaue==ZQPrinter.AB_SUCCESS){
t.append("Success\n\n");
}else{
t.append("Fail\n\n");
String tem_buffer=new String();
tem_buffer="ERROR ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
}
t.append("\n do long press on touchscreen\n");
CheckGC("GetStatus_End" );
return true;
case SetCharacterSet_ID:
CheckGC("SetCharacterSet_Start" );
t.setText("");
t.append("SetCharacterSet...\n");
returevlaue=PrinterService.SetCharacterSet(0);
if(returevlaue==ZQPrinter.AB_SUCCESS){ //0:USA, 19:Euro
t.append("Success\n\n");
String tem_buffer=new String();
tem_buffer="Data ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
}else{
t.append("Fail\n\n");
String tem_buffer=new String();
tem_buffer="ERROR ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
}
t.append("\n do long press on touchscreen\n");
CheckGC("SetCharacterSet_End" );
return true;
case GetPowerStatus_ID:
CheckGC("GetPowerStatus_Start" );
t.setText("");
t.append("GetPowerStatus...\n");
returevlaue=PrinterService.GetPowerStatus();
if(returevlaue==ZQPrinter.AB_SUCCESS){
t.append("Success\n\n");
}else if(returevlaue==ZQPrinter.PWR_HIGH){
t.append("Success\n\n");
String tem_buffer=new String();
tem_buffer="BXL_PWR_HIGH ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
}else if(returevlaue==ZQPrinter.PWR_MIDDLE){
t.append("Success\n\n");
String tem_buffer=new String();
tem_buffer="BXL_PWR_MIDDLE ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
}else if(returevlaue==ZQPrinter.PWR_LOW){
t.append("Success\n\n");
String tem_buffer=new String();
tem_buffer="BXL_PWR_LOW ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
}else if(returevlaue==ZQPrinter.PWR_SMALL){
t.append("Success\n\n");
String tem_buffer=new String();
tem_buffer="BXL_PWR_SMAL ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
}else if(returevlaue==ZQPrinter.PWR_NOT){
t.append("Success\n\n");
String tem_buffer=new String();
tem_buffer="BXL_PWR_NOT ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
}else{
t.append("Fail\n\n");
String tem_buffer=new String();
tem_buffer="ERROR ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
}
t.append("\n do long press on touchscreen\n");
CheckGC("GetPowerStatus_End" );
return true;
case MsrTrack1_ID:
CheckGC("MsrTrack1_Start" );
t.setText("");
t.append("MsrTrack1...\n");
byte[] i1 = PrinterService.MsrTrack1();
char temchar1;
if(i1!=null){
PrintOutput("MsrTrack1",i1);
t.append("Success\n\n");
////////////////////////////////////
String tem_buffer=new String();
tem_buffer="Data :("+i1.toString()+") ";
for(int i=0;i<i1.length;i++)
{
temchar1=(char)i1[i];
tem_buffer=tem_buffer+" "+temchar1;
}
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
///////////////////////////////////////
}else{
t.append("Fail\n\n");
}
t.append("\n do long press on touchscreen\n");
i1=null;
CheckGC("MsrTrack1_End" );
return true;
case MsrTrack2_ID:
CheckGC("MsrTrack2_Start" );
t.setText("");
t.append("MsrTrack2...\n");
byte[] i2 = PrinterService.MsrTrack2();
char temchar2;
if(i2!=null){
t.append("Success\n\n");
PrintOutput("MsrTrack2",i2);
////////////////////////////////////
String tem_buffer=new String();
tem_buffer="Data :("+i2.toString()+") ";
for(int i=0;i<i2.length;i++)
{
temchar2=(char)i2[i];
tem_buffer=tem_buffer+" "+temchar2;
}
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
////////////////////////////////////
}else{
t.append("Fail\n\n");
}
t.append("\n do long press on touchscreen\n");
i2=null;
CheckGC("MsrTrack1_End" );
return true;
case MsrTrack3_ID:
CheckGC("MsrTrack1_End" );
t.setText("");
t.append("MsrTrack3...\n");
byte[] i3 = PrinterService.MsrTrack3();
char temchar3;
if(i3!=null){
PrintOutput("MsrTrack3",i3);
t.append("Success\n\n");
////////////////////////////////////
String tem_buffer=new String();
tem_buffer="Data :("+i3.toString()+") ";
for(int i=0;i<i3.length;i++)
{
temchar3=(char)i3[i];
tem_buffer=tem_buffer+" "+temchar3;
}
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
////////////////////////////////////
}else{
t.append("Fail\n\n");
}
t.append("\n do long press on touchscreen\n");
i3=null;
CheckGC("MsrTrack1_End" );
return true;
case MsrTrack12_ID:
CheckGC("MsrTrack12_End" );
t.setText("");
t.append("MsrTrack12...\n");
byte[] i4 = PrinterService.MsrTrack12();
char temchar4;
if(i4!=null){
PrintOutput("MsrTrack12",i4);
t.append("Success\n\n");
////////////////////////////////////
String tem_buffer=new String();
tem_buffer="Data :("+i4.toString()+") ";
for(int i=0;i<i4.length;i++)
{
temchar4=(char)i4[i];
tem_buffer=tem_buffer+" "+temchar4;
}
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
////////////////////////////////////
}else{
t.append("Fail\n\n");
}
t.append("\n do long press on touchscreen\n");
i4=null;
CheckGC("MsrTrack12_End" );
return true;
case MsrTrack23_ID:
CheckGC("MsrTrack23_End" );
t.setText("");
t.append("MsrTrack23...\n");
byte[] i5 = PrinterService.MsrTrack3();
char temchar5;
if(i5!=null){
PrintOutput("MsrTrack23",i5);
t.append("Success\n\n");
////////////////////////////////////
String tem_buffer=new String();
tem_buffer="Data :("+i5.toString()+") ";
for(int i=0;i<i5.length;i++)
{
temchar5=(char)i5[i];
tem_buffer=tem_buffer+" "+temchar5;
}
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
////////////////////////////////////
}else{
t.append("Fail\n\n");
}
t.append("\n do long press on touchscreen\n");
i5=null;
CheckGC("MsrTrack23_End" );
return true;
case Directio_ID:
CheckGC("Directio_Start" );
t.setText("");
t.append("Directio...\n");
byte sendApdu[] = {0x10, 0x04, 0x01};
byte[] readData = new byte[1];
int[] readLength = new int[1];
readLength[0]=readData.length;
returevlaue=PrinterService.Directio(sendApdu,sendApdu.length,readData,readLength);
if(returevlaue==ZQPrinter.AB_SUCCESS){
t.append("Success\n\n");
////////////////////////////////////
String tem_buffer=new String();
tem_buffer="DataSize:("+readLength[0]+") ,Date : ";
for(int i=0;i<readLength[0];i++)
{
tem_buffer=tem_buffer+" "+readData[i];
}
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
////////////////////////////////////
}else{
t.append("Fail\n\n");
String tem_buffer=new String();
tem_buffer="ERROR ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
}
t.append("\n do long press on touchscreen\n");
CheckGC("Directio_End" );
return true;
case PrintText1K_ID:
CheckGC("PrintText1K_Start" );
t.setText("");
t.append("PrintText1K...\n");
String test=new String();
for(int i=0 ;i<120;i++)
{
test+="ABCDEFGabcdefg123456!@#$%^ ";
}
returevlaue=PrinterService.PrintText(test,
ZQPrinter.ALIGNMENT_LEFT,
ZQPrinter.FT_DEFAULT,
ZQPrinter.TS_0WIDTH | ZQPrinter.TS_0HEIGHT );
if(returevlaue==ZQPrinter.AB_SUCCESS){
returevlaue=PrinterService.LineFeed(5);
t.append("Success\n\n");
}else{
t.append("Fail\n\n");
String tem_buffer=new String();
tem_buffer="ERROR ["+returevlaue+"]";
t.append(tem_buffer.subSequence(0,tem_buffer.getBytes().length));
tem_buffer=null;
}
test=null;
t.append("\n do long press on touchscreen\n");
CheckGC("PrintText1K_End" );
return true;
}
return super.onContextItemSelected(item);
}
void CheckGC(String FunctionName)
{
long VmfreeMemory =Runtime.getRuntime().freeMemory();
long VmmaxMemory=Runtime.getRuntime().maxMemory();
long VmtotalMemory=Runtime.getRuntime().totalMemory();
long Memorypercentage=((VmtotalMemory-VmfreeMemory)*100)/VmtotalMemory;
Log.i(TAG,FunctionName+"Before Memorypercentage"+Memorypercentage+"% VmtotalMemory["+VmtotalMemory+"] "+"VmfreeMemory["+VmfreeMemory+"] "+"VmmaxMemory["+VmmaxMemory+"] ");
//Runtime.getRuntime().gc();
System.runFinalization();
System.gc();
VmfreeMemory =Runtime.getRuntime().freeMemory();
VmmaxMemory=Runtime.getRuntime().maxMemory();
VmtotalMemory=Runtime.getRuntime().totalMemory();
Memorypercentage=((VmtotalMemory-VmfreeMemory)*100)/VmtotalMemory;
Log.i(TAG,FunctionName+"_After Memorypercentage"+Memorypercentage+"% VmtotalMemory["+VmtotalMemory+"] "+"VmfreeMemory["+VmfreeMemory+"] "+"VmmaxMemory["+VmmaxMemory+"] ");
}
public void PrintOutput(String FunctionName,byte[] Data)
{
for(int i=0;i<Data.length;i++)
{
Log.i(TAG,FunctionName+"Data["+i+"]="+Data[i]);
}
}