/**
* 判断打开文件的是那种类型
* @param uri
*/
private void isWhetherTruePath(Uri uri){
try {
Log.i("hxl", "获取文件的路径filePath========="+filePath);
if (filePath != null) {
if (filePath.endsWith(".doc")) {
if ("file".equalsIgnoreCase(uri.getScheme())) {//使用第三方应用打开
filePath = getPath(this, uri);
Log.i("hxl", "===调用第三方应用打开===");
fileName = filePath.substring(filePath.lastIndexOf("/") + 1);
file = new File(filePath);
}
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT) {//4.4以后
Log.i("hxl", "===调用4.4以后系统方法===");
filePath = getRealPathFromURI(uri);
fileName = filePath.substring(filePath.lastIndexOf("/") + 1);
file = new File(filePath);
} else {//4.4以下系统调用方法
filePath = getRealPathFromURI(uri);
Log.i("hxl", "===调用4.4以下系统方法===");
fileName = filePath.substring(filePath.lastIndexOf("/") + 1);
file = new File(filePath);
}
} else {
Toast.makeText(MainActivity.this, "您选中的文件格式不是Word文档", Toast.LENGTH_LONG).show();
}
//                Log.i("hxl", "file========="+file);
}else{
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 专为Android4.4设计的从Uri获取文件绝对路径，以前的方法已不好使
*/
@TargetApi(Build.VERSION_CODES.KITKAT)
public String getPath(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[]{split[1]};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
public String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {column};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
null);
if (cursor != null && cursor.moveToFirst()) {
final int column_index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(column_index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
public boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
//获取文件的真实路径
public String getRealPathFromURI(Uri contentUri) {
String res = null;
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(contentUri, proj, null, null, null);
if(cursor.moveToFirst()){;
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
res = cursor.getString(column_index);
}
cursor.close();
return res;
}