如何使pdf，xlsx和txt文件android的intent.setType？
我只想从存储中选择pdf，xlsx和txt文件，但是intent.setType只能执行一个文件（例如仅仅是.txt文件（或）pdf文件）。 是否有可能通过编码intent.setType（）获取所有三个文件？有没有办法做到这一点？
这是我的一些代码。
private void showFileChooser() {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("application/pdf");
intent.addCategory(Intent.CATEGORY_OPENABLE);
try {
startActivityForResult(
Intent.createChooser(intent, "Select txt file"),
0);
} catch (android.content.ActivityNotFoundException ex) {
// Potentially direct the user to the Market with a Dialog
}
}
@Fatehali Asamadi的方式没问题，但需要添加适当的用途。 对于Microsoft文档（.doc或.docx），（.ppt或.pptx），使用（.xls或.xlsx）扩展名。 要支持或浏览这些扩展，您需要添加更多mymeTypes。
使用下面的方法浏览REQUEST_CODE_DOC为onActivityResult的requestCode的文档（final int requestCode，final int resultCode，final Intent data）@Override方法。
private void browseDocuments(){
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"};
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
intent.setType(mimeTypes.length == 1 ? mimeTypes[0] : "*/*");
if (mimeTypes.length > 0) {
intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);
}
} else {
String mimeTypesStr = "";
for (String mimeType : mimeTypes) {
mimeTypesStr += mimeType + "|";
}
intent.setType(mimeTypesStr.substring(0,mimeTypesStr.length() - 1));
}
startActivityForResult(Intent.createChooser(intent,"ChooseFile"), REQUEST_CODE_DOC);
}
你可以得到清晰的概念，并从这里添加你需要的mymeTypes
intent.setType("image/*|application/pdf|audio/*");
也许这是你想要的。
看起来你只是想看看这些意图是否可以解决。 这可能是一个更好的方法：
private void showFileChooser() {
Intent intentPDF = new Intent(Intent.ACTION_GET_CONTENT);
intentPDF.setType("application/pdf");
intentPDF.addCategory(Intent.CATEGORY_OPENABLE);
Intent intentTxt = new Intent(Intent.ACTION_GET_CONTENT);
intentTxt.setType("text/plain");
intentTxt.addCategory(Intent.CATEGORY_OPENABLE);
Intent intentXls = new Intent(Intent.ACTION_GET_CONTENT);
intentXls.setType("application/x-excel");
intentXls.addCategory(Intent.CATEGORY_OPENABLE);
PackageManager packageManager = getPackageManager();
List activitiesPDF = packageManager.queryIntentActivities(intentPDF,
PackageManager.MATCH_DEFAULT_ONLY);
boolean isIntentSafePDF = activitiesPDF.size() > 0;
List activitiesTxt = packageManager.queryIntentActivities(intentTxt,
PackageManager.MATCH_DEFAULT_ONLY);
boolean isIntentSafeTxt = activitiesTxt.size() > 0;
List activitiesXls = packageManager.queryIntentActivities(intentXls,
PackageManager.MATCH_DEFAULT_ONLY);
boolean isIntentSafeXls = activitiesXls.size() > 0;
if (!isIntentSafePDF || !isIntentSafeTxt || !isIntentSafeXls){
// Potentially direct the user to the Market with a Dialog
}
}
参考文献：
http://developer.android.com/training/basics/intents/sending.html
我如何确定Android是否可以处理PDF
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