Java tutorial
/* * Copyright (c) 2010-11 Dropbox, Inc. * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, * copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following * conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ package com.dropbox.android.sample; import java.io.File; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Locale; import android.app.Activity; import android.content.ActivityNotFoundException; import android.content.Intent; import android.content.SharedPreferences; import android.content.SharedPreferences.Editor; import android.content.pm.PackageManager; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.provider.MediaStore; import android.support.v4.app.ActivityCompat; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; import com.dropbox.client2.DropboxAPI; import com.dropbox.client2.android.AndroidAuthSession; import com.dropbox.client2.android.AuthActivity; import com.dropbox.client2.session.AccessTokenPair; import com.dropbox.client2.session.AppKeyPair; import static android.Manifest.permission.READ_EXTERNAL_STORAGE; import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE; public class DBRoulette extends Activity { private static final String TAG = "DBRoulette"; /////////////////////////////////////////////////////////////////////////// // Your app-specific settings. // /////////////////////////////////////////////////////////////////////////// // Replace this with your app key and secret assigned by Dropbox. // Note that this is a really insecure way to do this, and you shouldn't // ship code which contains your key & secret in such an obvious way. // Obfuscation is good. private static final String APP_KEY = "4llmgy33myaizyn"; //<<<============replace app key private static final String APP_SECRET = "naoed5xmpmlh55l"; //<<<=============replace app secret /////////////////////////////////////////////////////////////////////////// // End app-specific settings. // /////////////////////////////////////////////////////////////////////////// // You don't need to change these, leave them alone. private static final String ACCOUNT_PREFS_NAME = "prefs"; private static final String ACCESS_KEY_NAME = "ACCESS_KEY"; private static final String ACCESS_SECRET_NAME = "ACCESS_SECRET"; private static final boolean USE_OAUTH1 = false; private static final int REQUEST_EXTERNAL_STORAGE = 0; DropboxAPI<AndroidAuthSession> mApi; DropboxAccess operations; /////////////////////////////////////////////////////////////////////////// private boolean mLoggedIn; // Android widgets private Button mSubmit; private LinearLayout mDisplay; private ListView mList, downloadList; private final String MyDropbox_DIR = "/Photos/";//<<<===============dropbox directory private File downloadDir = new File( Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), "DBDownload");//<<<========local directory private static final int CHOOSE_FILE = 2; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); /*//api 23 target sdk versionapi 23?? ? int permission = ActivityCompat.checkSelfPermission(this, WRITE_EXTERNAL_STORAGE); if (permission != PackageManager.PERMISSION_GRANTED) { // ?? ActivityCompat.requestPermissions( this, new String[] {WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE}, REQUEST_EXTERNAL_STORAGE ); }else{ //?? } */ //============= ?================================== // We create a new AuthSession so that we can use the Dropbox API. AndroidAuthSession session = buildSession(); mApi = new DropboxAPI<AndroidAuthSession>(session); checkAppKeySetup(); operations = new DropboxAccess(this, mApi); //====================================================== // Basic Android widgets setContentView(R.layout.main); mSubmit = (Button) findViewById(R.id.auth_button); mSubmit.setOnClickListener(new OnClickListener() { public void onClick(View v) { // This logs you out if you're logged in, or vice versa if (mLoggedIn) { logOut(); } else { // Start the remote authentication if (USE_OAUTH1) { mApi.getSession().startAuthentication(DBRoulette.this); } else { mApi.getSession().startOAuth2Authentication(DBRoulette.this); } } } }); mDisplay = (LinearLayout) findViewById(R.id.logged_in_display); // This is the button to upload file Button mUpload = (Button) findViewById(R.id.photo_button); mUpload.setOnClickListener(new OnClickListener() { public void onClick(View v) { final String mimeType = "application/x-sqlite3"; final Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.setType(mimeType); intent.putExtra(Intent.EXTRA_LOCAL_ONLY, true); startActivityForResult(intent, CHOOSE_FILE); } }); Button mShowDropboxFile = (Button) findViewById(R.id.list_button); mList = (ListView) findViewById(R.id.listView_dropbox); mShowDropboxFile.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { operations.ListRemoteFile(MyDropbox_DIR, mList); } }); downloadList = (ListView) findViewById(R.id.listView_download); mList.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) { String select = ((TextView) view).getText().toString(); operations.DownloadFile(MyDropbox_DIR, downloadDir.getAbsolutePath(), select, downloadList); } }); // Display the proper UI state if logged in or not setLoggedIn(mApi.getSession().isLinked());//,<<<============================================== } //? //============================dropbox api setting======================================================= @Override protected void onResume() { super.onResume(); AndroidAuthSession session = mApi.getSession(); // The next part must be inserted in the onResume() method of the // activity from which session.startAuthentication() was called, so // that Dropbox authentication completes properly. if (session.authenticationSuccessful()) { try { // Mandatory call to complete the auth session.finishAuthentication(); // Store it locally in our app for later use storeAuth(session); setLoggedIn(true); } catch (IllegalStateException e) { showToast("Couldn't authenticate with Dropbox:" + e.getLocalizedMessage()); Log.i(TAG, "Error authenticating", e); } } } private void logOut() { // Remove credentials from the session mApi.getSession().unlink(); // Clear our stored keys clearKeys(); // Change UI state to display logged out version setLoggedIn(false); } /** * Convenience function to change UI state based on being logged in */ private void setLoggedIn(boolean loggedIn) { mLoggedIn = loggedIn; if (loggedIn) { mSubmit.setText("Unlink from Dropbox"); mDisplay.setVisibility(View.VISIBLE); operations.ListRemoteFile(MyDropbox_DIR, mList); operations.ListLocalFile(downloadDir.getPath(), downloadList); } else { mSubmit.setText("Link with Dropbox"); mDisplay.setVisibility(View.GONE); } } private void checkAppKeySetup() { // Check to make sure that we have a valid app key if (APP_KEY.startsWith("CHANGE") || APP_SECRET.startsWith("CHANGE")) { showToast( "You must apply for an app key and secret from developers.dropbox.com, and add them to the DBRoulette ap before trying it."); finish(); return; } // Check if the app has set up its manifest properly. Intent testIntent = new Intent(Intent.ACTION_VIEW); String scheme = "db-" + APP_KEY; String uri = scheme + "://" + AuthActivity.AUTH_VERSION + "/test"; testIntent.setData(Uri.parse(uri)); PackageManager pm = getPackageManager(); if (0 == pm.queryIntentActivities(testIntent, 0).size()) { showToast("URL scheme in your app's " + "manifest is not set up correctly. You should have a " + "com.dropbox.client2.android.AuthActivity with the " + "scheme: " + scheme); finish(); } } private void showToast(String msg) { Toast error = Toast.makeText(this, msg, Toast.LENGTH_LONG); error.show(); } /** * Shows keeping the access keys returned from Trusted Authenticator in a local * store, rather than storing user name & password, and re-authenticating each * time (which is not to be done, ever). */ private void loadAuth(AndroidAuthSession session) { SharedPreferences prefs = getSharedPreferences(ACCOUNT_PREFS_NAME, 0); String key = prefs.getString(ACCESS_KEY_NAME, null); String secret = prefs.getString(ACCESS_SECRET_NAME, null); if (key == null || secret == null || key.length() == 0 || secret.length() == 0) return; if (key.equals("oauth2:")) { // If the key is set to "oauth2:", then we can assume the token is for OAuth 2. session.setOAuth2AccessToken(secret); } else { // Still support using old OAuth 1 tokens. session.setAccessTokenPair(new AccessTokenPair(key, secret)); } } /** * Shows keeping the access keys returned from Trusted Authenticator in a local * store, rather than storing user name & password, and re-authenticating each * time (which is not to be done, ever). */ private void storeAuth(AndroidAuthSession session) { // Store the OAuth 2 access token, if there is one. String oauth2AccessToken = session.getOAuth2AccessToken(); if (oauth2AccessToken != null) { SharedPreferences prefs = getSharedPreferences(ACCOUNT_PREFS_NAME, 0); Editor edit = prefs.edit(); edit.putString(ACCESS_KEY_NAME, "oauth2:"); edit.putString(ACCESS_SECRET_NAME, oauth2AccessToken); edit.commit(); return; } // Store the OAuth 1 access token, if there is one. This is only necessary if // you're still using OAuth 1. AccessTokenPair oauth1AccessToken = session.getAccessTokenPair(); if (oauth1AccessToken != null) { SharedPreferences prefs = getSharedPreferences(ACCOUNT_PREFS_NAME, 0); Editor edit = prefs.edit(); edit.putString(ACCESS_KEY_NAME, oauth1AccessToken.key); edit.putString(ACCESS_SECRET_NAME, oauth1AccessToken.secret); edit.commit(); return; } } private void clearKeys() { SharedPreferences prefs = getSharedPreferences(ACCOUNT_PREFS_NAME, 0); Editor edit = prefs.edit(); edit.clear(); edit.commit(); } private AndroidAuthSession buildSession() { AppKeyPair appKeyPair = new AppKeyPair(APP_KEY, APP_SECRET); AndroidAuthSession session = new AndroidAuthSession(appKeyPair); loadAuth(session); return session; } //??? //=================================================================================================== // This is what gets called on finishing a media piece to import //?? @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == CHOOSE_FILE) { // return from file upload if (resultCode == Activity.RESULT_OK) { Uri uri = null; if (data != null) { uri = data.getData(); } if (uri != null) { String path = uri.getPath(); System.out.println(uri.getLastPathSegment()); if (path.startsWith("/file")) path = path.replace("/file", ""); operations.UploadFile(MyDropbox_DIR, new File(path), mList); } } else { Log.w(TAG, "Unknown Activity Result from mediaImport: " + resultCode); } } } //api 23 permission @Override public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) { switch (requestCode) { case REQUEST_EXTERNAL_STORAGE: if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { //??? } else { //??? this.finish(); } } } }