我想以编程方式发送电子邮件.
我尝试了以下代码.
最终Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
Run Code Online (Sandbox Code Playgroud)emailIntent.setType("plain/text"); emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, new String[] { "abc@gmail.com" }); emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Email Subject"); emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, "Email Body"); startActivity(Intent.createChooser( emailIntent, "Send mail..."));
但问题是在发送电子邮件之前应用程序打开活动

我想直接发送电子邮件而不需要开放撰写活动.这怎么可能?
java源代码不用jdk编译6.
import org.w3c.dom.Node;
Node node = list.item(0);
String txtContent = node.getTextContent();
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在jdk 6中找不到getTextContent()
怎么能解决这个编译问题.
在 Google Play 商店控制台中上传构建时出现错误。错误如下。
泄露的 GCP API 密钥 您的应用程序包含泄露的 Google Cloud Platform (GCP) API 密钥。
罪魁祸首代码如下。
Places.initialize(getApplicationContext(), BuildConfig.GOOGLE_API_KEY);
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根据文档,我正在从 BuildConfig 读取密钥并限制该密钥。但仍然是同样的问题。我该如何解决这个问题..
我在哪里可以获得Android 1.5和1.6日历源代码?
使用Firebase云消息管理员发送消息时出错API.
错误信息如下
引起:com.google.api.client.http.HttpResponseException:400 Bad Request {"error":{"code":400,"message":"Request包含无效参数.","errors":[{"消息":"请求包含无效参数.","domain":"global","reason":"badRequest"}],"status":"INVALID_ARGUMENT"}}
让我把我的管理配置放在这里..
FileInputStream serviceAccount = new FileInputStream("My service accout file.json");
FirebaseOptions options = new FirebaseOptions.Builder().setCredentials(GoogleCredentials.fromStream(serviceAccount))
.setDatabaseUrl("https://deliveryeat-1aa42.firebaseio.com").build();
FirebaseApp.initializeApp(options);
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消息发送代码如下
// This registration token comes from the client FCM SDKs.
String registrationToken = "YOUR_REGISTRATION_TOKEN";
// See documentation on defining a message payload.
Message message = Message.builder().putData("score", "850").putData("time", "2:45").setToken(registrationToken).build();
// Send a message to the device corresponding to the provided
// registration token.
String response = FirebaseMessaging.getInstance().sendAsync(message).get();
// Response is a message ID string. …Run Code Online (Sandbox Code Playgroud) 我想在不调用onCreate方法的情况下更改布局.我还在我的活动中定义了android:configChanges ="orientation | keyboardHidden",它没有调用onCreate方法,但布局在横向模式下没有适当调整.
我目前的布局如下所示.

在将方向更改为横向后,它看起来如下所示:

但在景观上我想要以下结果.

有没有汽车相邻的财产?
我该怎么做?
我的目标是阅读和编写日历.
我能够从内容中读取数据:// calendar/calendars和content:// calendar/events
String uriString = "content://calendar/calendars";
Log.i("INFO", "Reading content from " + uriString);
readContent(uriString);
uriString = "content://calendar/events";
Log.i("INFO", "Reading content from " + uriString);
readContent(uriString);
private void readContent(String uriString) {
Uri uri = Uri.parse(uriString);
Cursor cursor = mContext.getContentResolver().query(uri, null, null,
null, null);
if (cursor != null && cursor.getCount() > 0) {
cursor.moveToFirst();
String columnNames[] = cursor.getColumnNames();
String value = "";
String colNamesString = "";
do {
value = "";
for (String colName : columnNames) {
value += colName …Run Code Online (Sandbox Code Playgroud) I want to desing java application that montior internet activity. Let consider I open different browser and that sending and receving data from internet. My application requirment is that to monitor that sending and receving packets. So my application working as services that generate log of internet surfing. How this posible in the java?