小编Nir*_*bhi的帖子

我创建了一个Android应用程序,因为Facebook的授权很好,但是当我点击更新状态按钮时它会显示异常.它返回状态代码403.

代码是:

if (providerName.equalsIgnoreCase("facebook") 
        {
            try 
            {
                adapter.updateStory(
                        "Hello SocialAuth Android" + System.currentTimeMillis(),
                        "AAA",
                        "BBB",
                        "CCC.",
                        "DDD", "EEE",
                        new MessageListener());
            }
            catch (UnsupportedEncodingException e) 
            {               
                e.printStackTrace();
            }
        }

I have Path Which is stored into one variable That is

String Path:

String filepath="/mnt/sdcard/DCIM/Camera/1396854069062.jpg";

Now i want to rename only file that is 1396854069062.jpg I Reilly don't have any idea for how to do that.

My Code Is:

File sdcard = Environment.getExternalStorageDirectory();
File from = new File(sdcard, filePath);
File to = new File(sdcard, "RChat_Rename.jpg";
from.renameTo(to);

Any help will b appreciated.

Thank You

我正在开发一个需要Google Maps到应用程序的Andorid Applicaiton.

因为我在以下链接中使用相同的示例.

链接谷歌地图.

在那我有应用API KEY到andorid Manifist文件.

<meta-data
   android:name="com.google.android.maps.v2.API_KEY"
   android:value="API KEY" />

我正在追踪错误.

         FATAL EXCEPTION: main
 android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=market://details?id=com.google.android.gms flg=0x80000 pkg=com.android.vending }
    at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1622)
    at android.app.Instrumentation.execStartActivity(Instrumentation.java:1417)
    at android.app.Activity.startActivityForResult(Activity.java:3370)
    at android.app.Activity.startActivityForResult(Activity.java:3331)
    at android.app.Activity.startActivity(Activity.java:3566)
    at android.app.Activity.startActivity(Activity.java:3534)
    at com.google.android.gms.dynamic.a$5.onClick(Unknown Source)
    at android.view.View.performClick(View.java:4202)
    at android.view.View$PerformClick.run(View.java:17340)
    at android.os.Handler.handleCallback(Handler.java:725)
    at android.os.Handler.dispatchMessage(Handler.java:92)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:5039)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
    at dalvik.system.NativeStart.main(Native Method)

我的XML文件是:

<fragment
        android:id="@+id/map"
        android:name="com.google.android.gms.maps.MapFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

我的Andorid清单文件是:

<?xml version="1.0" encoding="utf-8"?>
<manifest …

他的朋友们

我有一个ListView,它显示来自JSON解析器的图像数据,因为我使用自定义基本适配器.

但我得到了以下例外.

FATAL EXCEPTION: main
java.lang.NullPointerException
    at com.example.ecard.ECard_main$AsycLove.onPostExecute(ECard_main.java:193)
    at com.example.ecard.ECard_main$AsycLove.onPostExecute(ECard_main.java:1)
    at android.os.AsyncTask.finish(AsyncTask.java:602)
    at android.os.AsyncTask.access$600(AsyncTask.java:156)
    at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:615)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:4424)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
    at dalvik.system.NativeStart.main(Native Method)

我的代码是:

package com.example.ecard;


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;

import com.loopj.android.image.SmartImageView;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.ListView; …