Android 定义全局 ToastUtils

public class ToastUtils {   private static Toast toast;   private static View view;   private ToastUtils() {   }   private static void getToast(Context context) {      if (toast == null) {         toast = new Toast(context);      }      if (view == null) {         view = Toast.makeText(context, "", Toast.LENGTH_SHORT).getView();      }      toast.setView(view);   }   public static void showShortToast(Context context, CharSequence msg) {      showToast(context.getApplicationContext(), msg, Toast.LENGTH_SHORT);   }   public static void showShortToast(Context context, int resId) {      showToast(context.getApplicationContext(), resId, Toast.LENGTH_SHORT);   }   public static void showLongToast(Context context, CharSequence msg) {      showToast(context.getApplicationContext(), msg, Toast.LENGTH_SHORT);   }   public static void showLongToast(Context context, int resId) {      showToast(context.getApplicationContext(), resId, Toast.LENGTH_LONG);   }   private static void showToast(Context context, CharSequence msg, int duration) {      try {         getToast(context);         toast.setText(msg);         toast.setDuration(duration);         toast.setGravity(Gravity.CENTER, 0, 0);         toast.show();      } catch (Exception e) {         LogUtils.e(e.getMessage());      }   }   private static void showToast(Context context, int resId, int duration) {      try {         if (resId == 0) {            return;         }         getToast(context);         toast.setText(resId);         toast.setDuration(duration);         toast.setGravity(Gravity.CENTER, 0, 0);         toast.show();      } catch (Exception e) {         LogUtils.e(e.getMessage());      }   }   public static void cancelToast() {      if (toast != null) {         toast.cancel();      }   }}
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