application

SApplication类：

package com.example.sapplication;
import android.app.Application;




public class SApplication extends Application{


static SApplication sapp = new SApplication();

public static SApplication getInstance(){
return sapp;
}

public String getAucTerminalID() {
return aucTerminalID;
}


public void setAucTerminalID(String aucTerminalID) {
this.aucTerminalID = aucTerminalID;
}


public String getAucMerchantID() {
return aucMerchantID;
}


public void setAucMerchantID(String aucMerchantID) {
this.aucMerchantID = aucMerchantID;
}


public String getIP() {
return IP;
}


public void setIP(String iP) {
IP = iP;
}


public String getPORT() {
return PORT;
}


public void setPORT(String pORT) {
PORT = pORT;
}


private String aucTerminalID = "";
private String aucMerchantID = "";
private String IP = "";
private String PORT = "";

public void onCreate() {
super.onCreate();
}
}

使用Activity：

package com.example.sapplication;


import com.example.test02.R;


import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.app.Activity;


public class SApplicationActivity extends Activity {


Button btn1;
TextView txt1;
Button btn2;
TextView txt2;
SApplication sapp;

private void setAppData()
{
sapp.setAucMerchantID("123456789012345");
sapp.setAucTerminalID("12345678");
}

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


btn1 = (Button)findViewById(R.id.btn1);
txt1 = (TextView)findViewById(R.id.txt1);
btn2 = (Button)findViewById(R.id.btn2);
txt2 = (TextView)findViewById(R.id.txt2);
sapp = SApplication.getInstance();
setAppData();

btn1.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
txt1.setText(sapp.getAucTerminalID());
}
});

btn2.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
txt2.setText(sapp.getAucMerchantID());
}
});
}

}