can';在android存储上找不到图片
我有一个在手机上查找图片的代码。它适用于三星galaxy标签,但不适用于htc wildfirecan';在android存储上找不到图片,android,file,Android,File,我有一个在手机上查找图片的代码。它适用于三星galaxy标签,但不适用于htc wildfire public class MyStorage extends Activity{ public static boolean mExternalStorageAvailable; public static boolean mExternalStorageWriteable; public static void checkAvailability(){ //Checking media
public class MyStorage extends Activity{
public static boolean mExternalStorageAvailable;
public static boolean mExternalStorageWriteable;
public static void checkAvailability(){
//Checking media availability
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
// We can read and write the media
mExternalStorageAvailable = mExternalStorageWriteable = true;
} else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
// We can only read the media
mExternalStorageAvailable = true;
mExternalStorageWriteable = false;
} else {
// Something else is wrong. It may be one of many other states, but all we need
// to know is we can neither read nor write
mExternalStorageAvailable = mExternalStorageWriteable = false;
}
}
public static ArrayList<String> getFiles(){
checkAvailability();
ArrayList<String> result = new ArrayList<String>();
if(mExternalStorageAvailable){
File folder = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
String basePath = folder.toString();
result = listDirectory(folder, basePath);
}
return result;
}
private static ArrayList<String> listDirectory(File folder, String basePath){
String[] list = folder.list();
ArrayList<String> result = new ArrayList<String>();
if(list != null){
for (int i = 0; i < list.length; i++) {
File test = new File(basePath+"/"+list[i]);
if(test.isDirectory()){
result.addAll(listDirectory(test,basePath+"/"+list[i]));
}else{
result.add(basePath+"/"+list[i]);
}
}
}
return result;
}
}
公共类MyStorage扩展活动{
公共静态布尔值mExternalStorageAvailable;
公共静态布尔值mExternalStorageWriteable;
公共静态无效检查可用性(){
//检查媒体可用性
String state=Environment.getExternalStorageState();
if(环境、介质、安装等于(状态)){
//我们可以读写媒体
mExternalStorageAvailable=mExternalStorageWriteable=true;
}else if(Environment.MEDIA\u MOUNTED\u READ\u ONLY.equals(state)){
//我们只能阅读媒体
mExternalStorageAvailable=true;
mExternalStorageWriteable=false;
}否则{
//还有一些问题。它可能是许多其他州中的一个,但我们所需要的就是它
//要知道,我们既不会读也不会写
mExternalStorageAvailable=mExternalStorageWriteable=false;
}
}
公共静态ArrayList getFiles(){
检查可用性();
ArrayList结果=新建ArrayList();
如果(mExternalStorageAvailable){
File folder=Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY\u图片);
字符串basePath=folder.toString();
结果=列表目录(文件夹,基本路径);
}
返回结果;
}
私有静态ArrayList listDirectory(文件文件夹,字符串基路径){
String[]list=文件夹.list();
ArrayList结果=新建ArrayList();
如果(列表!=null){
for(int i=0;i
唯一的区别是
在我的平板电脑中,图片位于/图片中,在我的手机中,它们位于/图片中
谢谢你的帮助那是因为在HTC Wildfire上
"/Images" != Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
通常,为了获得图像,您最好使用ContentProvider:
诸如此类:
ContentResolver cr = mContext.getContentResolver();
Cursor cursor = cr.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, null, null, null, null);
您是否已添加读取sd卡的权限 但在代码中,请检查文件: if(Folder.equal(“/pictures”)){ ... } else如果{Folder.equal(“/Images”)){ ... }