如何停止android編輯文本框刷新

Question

我是新來的android，我試圖讓我當前的位置address.my代碼工作，但文本框的值是刷新時間。我如何阻止它......

這是我的代碼..

公共類MylocMainActivity延伸活動{

String lat="", lon=""; 
    String ret= "" ; 

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


     //button click done 
    Button btnLocation = (Button)findViewById(R.id.btn_done); 
    btnLocation.setOnClickListener(new OnClickListener() { 
     public void onClick(View arg0) { 

      location(); 
      Log.d("OnClick","Passed"); 
     } 
    }); 

} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.myloc_main, menu); 
    return true; 
} 


public void location() 
    { 
     // Acquire a reference to the system Location Manager 
     LocationManager locationManager = (LocationManager) MylocMainActivity.this.getSystemService(Context.LOCATION_SERVICE); 
     // Define a listener that responds to location updates 
     LocationListener locationListener = new LocationListener() { 
      public void onLocationChanged(Location location) { 
       // Called when a new location is found by the network location provider. 
       lat = Double.toString(location.getLatitude()); 
       lon = Double.toString(location.getLongitude()); 
       TextView tv = (TextView) findViewById(R.id.tv_location); 
       tv.setText("Your Location is:" + lat + "--" + lon); 
       tv.setText(GetAddress(lat, lon)); 
       Intent i = new Intent(MylocMainActivity.this,MainActivity.class); 
       i.putExtra("clist",ret.toString()); 
       startActivity(i); 

      } 


      public void onStatusChanged(String provider, int status, Bundle extras) {} 
      public void onProviderEnabled(String provider) {} 
      public void onProviderDisabled(String provider) {} 
     }; 
     // Register the listener with the Location Manager to receive location updates 
     locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener); 

    } 


    // get the address 
    public String GetAddress(String lat, String lon) 
    { 
     Geocoder geocoder = new Geocoder(this, Locale.ENGLISH); 

     try { 
      List<Address> addresses = geocoder.getFromLocation(Double.parseDouble(lat), Double.parseDouble(lon), 1); 
      if(addresses != null) { 
       Address returnedAddress = addresses.get(0); 
       StringBuilder strReturnedAddress = new StringBuilder("Address:\n"); 
       for(int i=0; i<returnedAddress.getMaxAddressLineIndex(); i++) { 
        strReturnedAddress.append(returnedAddress.getAddressLine(i)).append("\n"); 
       } 
       ret = strReturnedAddress.toString(); 
      } 
      else{ 
       ret = "No Address returned!"; 
      } 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      ret = "Can't get Address!"; 
     } 
     return ret; 
    } 

}

........主要活動類.............

公共類MainActivity擴展活動{

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

    Intent startbuttonintent = getIntent(); 

    String conlist = null; 

    conlist = startbuttonintent.getStringExtra("clist"); 
    TextView name = (TextView) findViewById(R.id.family_Text); 
    name.setText(conlist); 



    Button btn = (Button)findViewById(R.id.btn_location); 
     btn.setOnClickListener(new OnClickListener() { 

      public void onClick(View v) { 

       Intent i = new Intent(MainActivity.this,MylocMainActivity.class); 
       startActivity(i); 
       // TODO Auto-generated method stub 

      } 
     }); 

} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.main, menu); 
    return true; 
} 

}

Answer 1

每當位置發生變化時，它都會更改文本視圖的內容，儘管由於編號的精確性，內容可能並未實際發生更改。 試試這個或設置TextView的類似的東西：

public void onLocationChanged(Location location) 
{ 
    // Called when a new location is found by the network location provider. 
    lat = Double.toString(location.getLatitude()); 
    lon = Double.toString(location.getLongitude()); 
    TextView tv = (TextView) findViewById(R.id.tv_location); 
    if(!tv.getText().equals(GetAddress(lat, lon))) 
    { 
     tv.setText("Your Location is:" + lat + "--" + lon); 
     tv.setText(GetAddress(lat, lon)); 
    } 
    Intent i = new Intent(MylocMainActivity.this,MainActivity.class); 
    i.putExtra("clist",ret.toString()); 
    startActivity(i); 
} 

Answer 2

你可以從onLocationChanged位置存儲在一個位置值（mLocation）。 每個位置發生變化時您檢查

if (mLocation != null) { // do something }