1

gpsを使用して場所を見つけようとしていますが、次のスニペットのコードで問題が発生します。エラーは次のように表示されます

Toast 型のメソッド makeText(Context, CharSequence, int) は
引数 (GeocodingMainActivity, String, int) には適用されません

..........

private class MyLocationListener implements LocationListener {

 public void onLocationChanged(Location location) {
     String format = String.format( "New Location \n Longitude: %1$s \n Latitude: %2$s", location.getLongitude(), location.getLatitude());
    String message = format;
     Toast.makeText(GeocodingMainActivity.this, message, Toast.LENGTH_LONG).show();
 }

 public void onStatusChanged(String s, int i, Bundle b) 
 {Toast.makeText(GeocodingMainActivity.this, "Provider status changed",Toast.LENGTH_LONG).show();
 }

 public void onProviderDisabled(String s) {
     Toast.makeText(GeocodingMainActivity.this,"Provider disabled by the user. GPS turned off",Toast.LENGTH_LONG).show();
 }

 public void onProviderEnabled(String s) {
     Toast.makeText(GeocodingMainActivity.this,"Provider enabled by the user. GPS turned on",Toast.LENGTH_LONG).show();
 }
4

4 に答える 4

4

これを試して...

Toast.makeText(getApplicationContext(), "message", Toast.LENGTH_LONG).show();
于 2013-02-02T10:12:53.230 に答える
1

このコードを試してください

     Toast.makeText(MyAndroidAppActivity.this,"String!", Toast.LENGTH_LONG).show();
于 2013-02-02T12:33:37.003 に答える
0

MyLocationListener を以下のコードに置き換えます。MyLocationListener を使用するときにコンテキストを渡します。

private class MyLocationListener implements LocationListener {
     private Activity mContext;
     public MyLocationListener(Activity context) {    
        this.mContext = context;
 }
 public void onLocationChanged(Location location) {
     String format = String.format( "New Location \n Longitude: %1$s \n Latitude: %2$s", location.getLongitude(), location.getLatitude());
     String message = format;
     Toast.makeText(mContext, message, Toast.LENGTH_LONG).show();
 }

 public void onStatusChanged(String s, int i, Bundle b) 
 {
      Toast.makeText(mContext, "Provider status changed",Toast.LENGTH_LONG).show();
 }

 public void onProviderDisabled(String s) {
     Toast.makeText(mContext,"Provider disabled by the user. GPS turned off",Toast.LENGTH_LONG).show();
 }

 public void onProviderEnabled(String s) {
     Toast.makeText(mContext,"Provider enabled by the user. GPS turned on",Toast.LENGTH_LONG).show();
 }
于 2019-03-14T11:55:00.317 に答える