在 Android 中通过意图选择任何类型的文件

我想启动一个应用程序的意图选择器，可以返回任何类型的文件

目前我使用(我从 Android 的电子邮件附件源代码复制)

Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("*/*");
Intent i = Intent.createChooser(intent, "File");
startActivityForResult(i, CHOOSE_FILE_REQUESTCODE);

但它只显示“画廊”和“音乐播放器”在我的 Galaxy S2。这个设备上有一个文件浏览器，我希望它出现在列表中。我也希望相机应用程序显示在列表中，以便用户可以拍摄的图片，并通过我的应用程序发送它。 如果我安装 Astro 文件管理器，它也会响应这个意图。我的客户只是 Galaxy SII 的所有者，我不想强迫他们安装 Astro 文件管理器，因为他们已经有了一个基本但足够的文件管理器。

你知道我是怎么做到的吗？我非常肯定我已经看到默认的文件管理器出现在这样的菜单选择一个文件，但我不记得在哪个应用程序。

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小开
最佳答案

Not for camera but for other files..

In my device I have ES File Explorer installed and This simply thing works in my case..

Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("file/*");
startActivityForResult(intent, PICKFILE_REQUEST_CODE);
小开

Turns out the Samsung file explorer uses a custom action. This is why I could see the Samsung file explorer when looking for a file from the samsung apps, but not from mine.

The action is "com.sec.android.app.myfiles.PICK_DATA"

I created a custom Activity Picker which displays activities filtering both intents.

小开

this work for me on galaxy note its show contacts, file managers installed on device, gallery, music player

private void openFile(Int  CODE) {
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.setType("*/*");
startActivityForResult(intent, CODE);
}

here get path in onActivityResult of activity.

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
String Fpath = data.getDataString();
// do somthing...
super.onActivityResult(requestCode, resultCode, data);


}
小开

Samsung file explorer needs not only custom action (com.sec.android.app.myfiles.PICK_DATA), but also category part (Intent.CATEGORY_DEFAULT) and mime-type should be passed as extra.

Intent intent = new Intent("com.sec.android.app.myfiles.PICK_DATA");
intent.putExtra("CONTENT_TYPE", "*/*");
intent.addCategory(Intent.CATEGORY_DEFAULT);

You can also use this action for opening multiple files: com.sec.android.app.myfiles.PICK_DATA_MULTIPLE Anyway here is my solution which works on Samsung and other devices:

public void openFile(String mimeType) {


Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType(mimeType);
intent.addCategory(Intent.CATEGORY_OPENABLE);


// special intent for Samsung file manager
Intent sIntent = new Intent("com.sec.android.app.myfiles.PICK_DATA");
// if you want any file type, you can skip next line
sIntent.putExtra("CONTENT_TYPE", mimeType);
sIntent.addCategory(Intent.CATEGORY_DEFAULT);


Intent chooserIntent;
if (getPackageManager().resolveActivity(sIntent, 0) != null){
// it is device with Samsung file manager
chooserIntent = Intent.createChooser(sIntent, "Open file");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { intent});
} else {
chooserIntent = Intent.createChooser(intent, "Open file");
}


try {
startActivityForResult(chooserIntent, CHOOSE_FILE_REQUESTCODE);
} catch (android.content.ActivityNotFoundException ex) {
Toast.makeText(getApplicationContext(), "No suitable File Manager was found.", Toast.LENGTH_SHORT).show();
}
}

This solution works well for me, and maybe will be useful for someone else.

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If you want to know this, it exists an open source library called aFileDialog that it is an small and easy to use which provides a file picker.

The difference with another file chooser's libraries for Android is that aFileDialog gives you the option to open the file chooser as a Dialog and as an Activity.

It also lets you to select folders, create files, filter files using regular expressions and show confirmation dialogs.

小开

This gives me the best result: 

    Intent intent;
if (android.os.Build.MANUFACTURER.equalsIgnoreCase("samsung")) {
intent = new Intent("com.sec.android.app.myfiles.PICK_DATA");
intent.putExtra("CONTENT_TYPE", "*/*");
intent.addCategory(Intent.CATEGORY_DEFAULT);
} else {


String[] mimeTypes =
{"application/msword", "application/vnd.openxmlformats-officedocument.wordprocessingml.document", // .doc & .docx
"application/vnd.ms-powerpoint", "application/vnd.openxmlformats-officedocument.presentationml.presentation", // .ppt & .pptx
"application/vnd.ms-excel", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", // .xls & .xlsx
"text/plain",
"application/pdf",
"application/zip", "application/vnd.android.package-archive"};


intent = new Intent(Intent.ACTION_GET_CONTENT); // or ACTION_OPEN_DOCUMENT
intent.setType("*/*");
intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.putExtra(Intent.EXTRA_LOCAL_ONLY, true);
}
小开

The other answers are not incorrect. However, now there are more options for opening files. For example, if you want the app to have long term, permanent acess to a file, you can use ACTION_OPEN_DOCUMENT instead. Refer to the official documentation: Open files using storage access framework. Also refer to this answer.


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