我正在开发一个使用 Dropbox Sync API 上传文件的 Android 应用程序。我已经在 Dropbox 上创建了应用程序,获得了 APP_KEY 和 APP_SECRET。我已经包含了所有必要的库,在我的活动代码和清单中设置了正确的键。我的应用程序类似于文档中提供的 HelloDropbox 示例,但是当我单击“链接到 Dropbox”按钮时,该按钮应该显示输入我的 Dropbox 凭据的位置,但没有任何反应。这是源代码:
package com.diamondtrust66.helix.player;
import java.io.File;
import java.io.IOException;
import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.dropbox.client2.DropboxAPI;
import com.dropbox.sync.android.DbxAccountManager;
import com.dropbox.sync.android.DbxFile;
import com.dropbox.sync.android.DbxFileInfo;
import com.dropbox.sync.android.DbxFileSystem;
import com.dropbox.sync.android.DbxPath;
public class HelixPlayer extends Activity {
private static final String appKey = "1234-my-key";
private static final String appSecret = "1234-my-secret";
private static final int REQUEST_LINK_TO_DBX = 0;
private TextView mTestOutput;
private Button mLinkButton;
private DbxAccountManager mDbxAcctMgr;
private DropboxAPI<?> mDBApi;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_helix_player);
mTestOutput = (TextView) findViewById(R.id.test_output);
mLinkButton = (Button) findViewById(R.id.link_button);
mLinkButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
onClickLinkToDropbox();
}
});
mDbxAcctMgr = DbxAccountManager.getInstance(getApplicationContext(), appKey, appSecret);
}
@Override
protected void onResume() {
super.onResume();
if (mDbxAcctMgr.hasLinkedAccount()) {
showLinkedView();
doDropboxTest();
} else {
showUnlinkedView();
}
}
private void showLinkedView() {
mLinkButton.setVisibility(View.GONE);
mTestOutput.setVisibility(View.VISIBLE);
}
private void showUnlinkedView() {
mLinkButton.setVisibility(View.VISIBLE);
mTestOutput.setVisibility(View.GONE);
}
private void onClickLinkToDropbox() {
mDbxAcctMgr.startLink((Activity)this, REQUEST_LINK_TO_DBX);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_LINK_TO_DBX) {
if (resultCode == Activity.RESULT_OK) {
doDropboxTest();
} else {
Toast.makeText(getApplicationContext(), "FAILURE", Toast.LENGTH_LONG).show();
mTestOutput.setText("Link to Dropbox failed or was cancelled.");
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
private void doDropboxTest() {
try {
final String TEST_DATA = "Hello Dropbox";
final String TEST_FILE_NAME = "be like that.mp3";
DbxPath testPath = new DbxPath(DbxPath.ROOT, TEST_FILE_NAME);
// Create DbxFileSystem for synchronized file access.
DbxFileSystem dbxFs = DbxFileSystem.forAccount(mDbxAcctMgr.getLinkedAccount());
// Print the contents of the root folder. This will block until we can
// sync metadata the first time.
List<DbxFileInfo> infos = dbxFs.listFolder(DbxPath.ROOT);
mTestOutput.setText("\nContents of app folder:\n");
for (DbxFileInfo info : infos) {
mTestOutput.append(" " + info.path + ", " + info.modifiedTime + '\n');
}
// Create a test file only if it doesn't already exist.
if (!dbxFs.exists(testPath)) {
DbxFile testFile = dbxFs.create(testPath);
try {
File myFile = new File("/mnt/sdcard/alarms/be like that.mp3");
//testFile.writeString(TEST_DATA);
testFile.writeFromExistingFile(myFile, false);
} finally {
testFile.close();
}
mTestOutput.append("\nCreated new file '" + testPath + "'.\n");
}
// Read and print the contents of test file. Since we're not making
// any attempt to wait for the latest version, this may print an
// older cached version. Use getSyncStatus() and/or a listener to
// check for a new version.
/*if (dbxFs.isFile(testPath)) {
String resultData;
DbxFile testFile = dbxFs.open(testPath);
try {
resultData = testFile.readString();
} finally {
testFile.close();
}
mTestOutput.append("\nRead file '" + testPath + "' and got data:\n " + resultData);
} else if (dbxFs.isFolder(testPath)) {
mTestOutput.append("'" + testPath.toString() + "' is a folder.\n");
}*/
} catch (IOException e) {
mTestOutput.setText("Dropbox test failed: " + e);
}
}
}