MethodsCompat.java

package com.partynetwork.iparty.app;

import java.io.File;

import android.annotation.TargetApi;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory.Options;
import android.provider.MediaStore;

/**
 * Android各版本的兼容方法
 */
public class MethodsCompat {
	
    @TargetApi(5)
    public static void overridePendingTransition(Activity activity, int enter_anim, int exit_anim) {
       	activity.overridePendingTransition(enter_anim, exit_anim);
    }

    @TargetApi(7)
    public static Bitmap getThumbnail(ContentResolver cr, long origId, int kind, Options options) {
       	return MediaStore.Images.Thumbnails.getThumbnail(cr,origId,kind, options);
    }
    
    @TargetApi(8)
    public static File getExternalCacheDir(Context context) {

//	    // return context.getExternalCacheDir(); API level 8
//
//	    // e.g. "<sdcard>/Android/data/<package_name>/cache/"
//	    final File extCacheDir = new File(Environment.getExternalStorageDirectory(),
//	        "/Android/data/" + context.getApplicationInfo().packageName + "/cache/");
//	    extCacheDir.mkdirs();
//	    return extCacheDir;

        return context.getExternalCacheDir();
    }

}