documentsUI下载列表点击事件流程
1.列表布局文件item_doc_list.xml
2.DirectoryFragment.java
private class DocumentsAdapter extends BaseAdapter {
private View getDocumentView(){
.......
if (state.derivedMode == MODE_LIST) {
convertView = inflater.inflate(R.layout.item_doc_list, parent, false);
} else if (state.derivedMode == MODE_GRID) {
convertView = inflater.inflate(R.layout.item_doc_grid, parent, false);}
.....
}
}
mListView.setAdapter(mAdapter);
public View onCreateView(){
mListView.setOnItemClickListener(mItemListener);
}
private OnItemClickListener mItemListener = new OnItemClickListener() {
@Override
public void onItemClick(AdapterView parent, View view, int position, long id) {
final Cursor cursor = mAdapter.getItem(position);
Log.e("like","OnItemClickListener position="+position);
if (cursor != null) {
final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE);
final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS);
Log.e("like","docMimeType="+docMimeType+" docFlags="+docFlags);
if (isDocumentEnabled(docMimeType, docFlags)) {
final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(cursor);
Log.e("like","OnItemClickListener doc.displayName ="+doc.displayName);
((DocumentsActivity) getActivity()).onDocumentPicked(doc);
}
}
}
};
3.DocumentsActivity.java 来处理事件
public void onDocumentPicked(DocumentInfo doc) {
final FragmentManager fm = getFragmentManager();
Log.e("like","onDocumentPicked doc.displayName ="+doc.displayName+" mState.action ="+mState.action);
if (doc.isDirectory()) {
mState.stack.push(doc);
mState.stackTouched = true;
onCurrentDirectoryChanged(ANIM_DOWN);
} else if (mState.action == ACTION_OPEN || mState.action == ACTION_GET_CONTENT) {
// Explicit file picked, return
new ExistingFinishTask(doc.derivedUri).executeOnExecutor(getCurrentExecutor());
} else if (mState.action == ACTION_CREATE) {
// Replace selected file
SaveFragment.get(fm).setReplaceTarget(doc);
} else if (mState.action == ACTION_MANAGE) {
// First try managing the document; we expect manager to filter
// based on authority, so we don't grant.
final Intent manage = new Intent(DocumentsContract.ACTION_MANAGE_DOCUMENT);
manage.setData(doc.derivedUri);
try {
startActivity(manage);
Log.e("like","ACTION_MANAGE"+" doc.derivedUri ="+doc.derivedUri);
//doc.derivedUri =content://com.android.providers.downloads.documents/document/2
} catch (ActivityNotFoundException ex) {
// Fall back to viewing
final Intent view = new Intent(Intent.ACTION_VIEW);
view.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
view.setData(doc.derivedUri);
try {
Log.e("like","doc.derivedUri ="+doc.derivedUri+"ex = "+ex);
startActivity(view);
} catch (ActivityNotFoundException ex2) {
/// M: Show toast with enhance way.
showToast(R.string.toast_no_application);
}
}
}
}
3.在packages\providers\DownloadProvider\ui\AndroidManifest.xml
android:theme="@android:style/Theme.NoDisplay"
android:permission="android.permission.MANAGE_DOCUMENTS">
android:host="com.android.providers.downloads.documents"
android:mimeType="*/*" />
4.TrampolineActivity.java
@Override
protected void onCreate(Bundle savedInstanceState) {
switch (status) {
case DownloadManager.STATUS_PENDING:
case DownloadManager.STATUS_RUNNING:
Log.d("like", "1");
sendRunningDownloadClickedBroadcast(id);
finish();
break;
case DownloadManager.STATUS_PAUSED:
Log.d("like", "2");
if (reason == DownloadManager.PAUSED_QUEUED_FOR_WIFI) {
PausedDialogFragment.show(getFragmentManager(), id);
} else {
sendRunningDownloadClickedBroadcast(id);
finish();
}
break;
case DownloadManager.STATUS_SUCCESSFUL:
Log.d("like", "startViewIntent id = "+id);
if (!OpenHelper.startViewIntent(this, id, 0)) {
Toast.makeText(this, R.string.download_no_application_title, Toast.LENGTH_SHORT)
.show();
}
finish();
break;
case DownloadManager.STATUS_FAILED:
Log.d("like", "4");
Log.e("like","DownloadManager.STATUS_FAILED");
FailedDialogFragment.show(getFragmentManager(), id, reason);
break;
}
}
5.执行到OpenHelper.startViewIntent(this, id, 0) OpenHelper.java 通过setDataAndType来打开对应应用
public static boolean startViewIntent(Context context, long id, int intentFlags) {
final Intent intent = OpenHelper.buildViewIntent(context, id);
if (intent == null) {
Log.w(TAG, "No intent built for " + id);
return false;
}
intent.addFlags(intentFlags);
try {
context.startActivity(intent);
return true;
} catch (ActivityNotFoundException e) {
Log.w(TAG, "Failed to start " + intent + ": " + e);
return false;
}
}
/**
* Build an {@link Intent} to view the download with given ID, handling
* subtleties around installing packages.
*/
private static Intent buildViewIntent(Context context, long id) {
final DownloadManager downManager = (DownloadManager) context.getSystemService(
Context.DOWNLOAD_SERVICE);
downManager.setAccessAllDownloads(true);
final Cursor cursor = downManager.query(new DownloadManager.Query().setFilterById(id));
try {
if (!cursor.moveToFirst()) {
return null;
}
final Uri localUri = getCursorUri(cursor, COLUMN_LOCAL_URI);
// ckt: HePJ changed for bug 1065 @{
if(null == localUri){
return null;
}
/// @}
final File file = getCursorFile(cursor, COLUMN_LOCAL_FILENAME);
String mimeType = getCursorString(cursor, COLUMN_MEDIA_TYPE);
if (mimeType == null && file.getName().endsWith(".vcf")) {
mimeType = "text/x-vcard";
}
Log.d(TAG, "file: " + file.getName() + " mimeType: " + mimeType);
final Intent intent = new Intent(Intent.ACTION_VIEW);
/// M: Add to support MTK DRM @{
if (Constants.MTK_DRM_ENABLED
&& null != mimeType
&& (mimeType.equalsIgnoreCase(OmaDrmStore.DrmObjectMime.MIME_DRM_MESSAGE) || mimeType
.equalsIgnoreCase(OmaDrmStore.DrmObjectMime.MIME_DRM_CONTENT))) {
Xlog.i(Constants.DL_DRM, "will send DRM intent");
//DrmManagerClient drmClient = new DrmManagerClient(context);
//OmaDrmClient drmClient = new OmaDrmClient(context);
mimeType = DownloadDrmHelper.getOriginalMimeType(context, file, mimeType);
Xlog.d(Constants.DL_DRM, "Open DRM file:" + localUri + " MimeType is" + mimeType);
intent.setDataAndType(localUri, mimeType);
} else {
/// @}
if ("application/vnd.android.package-archive".equals(mimeType)) {
// PackageInstaller doesn't like content URIs, so open file
intent.setDataAndType(localUri, mimeType);
// Also splice in details about where it came from
final Uri remoteUri = getCursorUri(cursor, COLUMN_URI);
intent.putExtra(Intent.EXTRA_ORIGINATING_URI, remoteUri);
intent.putExtra(Intent.EXTRA_REFERRER, getRefererUri(context, id));
intent.putExtra(Intent.EXTRA_ORIGINATING_UID, getOriginatingUid(context, id));
} else if ("file".equals(localUri.getScheme())) {
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION
| Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
intent.setDataAndType(
ContentUris.withAppendedId(ALL_DOWNLOADS_CONTENT_URI, id), mimeType);
} else {
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.setDataAndType(localUri, mimeType);
}
/// M: Add to support MTK DRM @{
}
/// @}
return intent;
} finally {
cursor.close();
}
}