import android.app.Activity;

import android.app.Dialog;

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.drawable.BitmapDrawable;

import android.graphics.drawable.Drawable;

import android.os.AsyncTask;

import android.os.IBinder;

import android.os.Looper;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.inputmethod.InputMethodManager;

import android.widget.EditText;

import android.widget.ImageView;

import java.io.InputStream;

/**

 * UI工具类

 * @version 1.0

 */

public class UiUtilities {

   /**

    * 设置view的显示状态

    */

   public static void setVisibilitySafe(View view, int visibility) {

      if (view != null && view.getVisibility() != visibility) {

         view.setVisibility(visibility);

      }

   }

   /**

    * 设置view的显示状态

    */

   public static void setVisibilitySafe(View parent, int id, int visibility) {

      if (parent != null) {

         setVisibilitySafe(parent.findViewById(id), visibility);

      }

   }

   public static void setPressedSafe(View view, boolean pressed) {

      if (view != null && view.isPressed() != pressed) {

         view.setPressed(pressed);

      }

   }

   public static void setEnabledSafe(View parent, int id, boolean enabled) {

      if (parent != null) {

         View view = parent.findViewById(id);

         if (view != null) {

            view.setEnabled(enabled);

         }

      }

   }

   public static void setOnClickListenerSafe(View parent, int id, OnClickListener l) {

      if (parent != null) {

         View view = parent.findViewById(id);

         if (view != null) {

            view.setOnClickListener(l);

         }

      }

   }

   public static void requestFocus(View view) {

      if (view != null) {

         view.setFocusable(true);

         view.setFocusableInTouchMode(true);

         view.requestFocus();

      }

   }

   public static boolean isEditTextEmpty(EditText edit) {

      return edit.getText() == null || edit.getText().toString().trim().length() <= 0;

   }

   public static boolean hideInputMethod(Activity activity) {

      return hideInputMethod(activity, activity.getWindow().getDecorView().getWindowToken());

   }

   public static boolean hideInputMethod(Dialog dialog) {

      return hideInputMethod(dialog.getContext(), dialog.getWindow().getDecorView().getWindowToken());

   }

   public static boolean hideInputMethod(Context context, IBinder iBinder) {

      InputMethodManager im = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);

      return im.hideSoftInputFromWindow(iBinder, 0);

   }

   public static void checkBackgroudThread() {

      if (Looper.getMainLooper() == Looper.myLooper()) {

         throw new IllegalStateException("It must run in backgroud thread.");

      }

   }

   public static void cancelAsyncTask(AsyncTask<?, ?, ?> task) {

      if (task != null) {

         task.cancel(true);

      }

   }

   public static void clearBitmapInImageView(ImageView v) {

      if (v != null) {

         clearBitmapInDrawable(v.getDrawable());

      }

   }

   public static void clearBackgroundBitmapInView(View v) {

      if (v != null) {

         clearBitmapInDrawable(v.getBackground());

      }

   }

   public static void clearBitmapInDrawable(Drawable d) {

      if (d != null && d instanceof BitmapDrawable) {

         Bitmap bitmap = ((BitmapDrawable) d).getBitmap();

         if (bitmap != null) {

            Logger.v("luochun", bitmap.toString());

            bitmap.recycle();

         }

      }

   }

   public static Bitmap decodeResourceBitmap(Context context, int resId) {

      InputStream is = context.getResources().openRawResource(resId);

      return BitmapFactory.decodeStream(is);

   }

}