獲取的EditText從活動中的Android

Question

我想要和A​​PI來對斑馬打印機打印的門票，我有（只是用於測試），我的主要活動：

public class ZebraPrinterActivity extends Activity { 
public EditText macAddress; 
public Button testButton; 
public Printer zebra; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    macAddress = (EditText) this.findViewById(R.id.editText1); 
    testButton = (Button) this.findViewById(R.id.button1); 

    zebra = new Printer(new ZebraPrinterActivity()); 
    testButton.setOnClickListener(new OnClickListener() { 
     public void onClick(View v) { 
      new Thread(new Runnable() { 
       public void run() { 

       } 
      }).start(); 
     } 
    }); 
}} 

，我有我的課（API）稱爲打印機：

public class Printer { 

private ZebraPrinterConnection zebraPrinterConnection; 
private ZebraPrinter zebra; 
private String MAC; 

public Printer (Activity activity) { 
    zebraPrinterConnection = null; 
    zebra = null; 
    activity....get Edit Text 
    this.MAC = MAC; 
}} 

我需要的是從早期活動中獲取編輯文本，有沒有辦法做到這一點？

Answer 1

你試過這個嗎？

EditText macAddress = (EditText) activity.findViewById(R.id.editText1); 
String macAddressString = macAddress.getText(); 

上查看，如EditText一些操作可能因限制在一個非UI線程訪問UI元素無法正常工作。如果發生這種情況，看到這太問題的方法可以從另一個線程訪問的EditText元素：

Do some Android UI stuff in non-UI thread

或者對同一主題的Android的博客文章：

Painless Threading | Android Developers Blog