我有一个看起来像这样的设置:
class MyFragment implements SomeEventListener {
Application mAppContext;
boolean mBound;
boolean mDidCallUnbind;
MyIBinder mBinder;
ServiceConnection mConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
mBound = true;
mBinder = (MyIBinder) service;
mBinder.getThings();...
}
@Override
public void onServiceDisconnected(ComponentName name) {
mDidCallUnbind = false;
mBound = false;
mBinder = null;
}
};
...
@Override
public void onSomeEvent() {
mAppContext.bindService(...);
}
void unbindService() {
if (mBound && !mDidCallUnbind) {
mDidCallUnbind = true;
mAppContext.unbindService(mConnection);
}
}
@Override
public void onPause() …我有一个编辑文本,在我的应用程序中用作搜索框.在我的Nexus 7上的Jelly Bean中,当我在正在监听的文本框中输入内容并点击时,输入KeyEvent = null并将ActionId = 0传递给onEditorAction()方法.有人遇到过这种情况么？我认为这可能是一个错误.
在下面的第二个if语句中,我得到一个空指针,因为actionId = 0和KeyEvent = null;
// Search field logic.
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
Log.d(TAG, "onEditorAction");
if (event != null && event.getAction() != KeyEvent.ACTION_DOWN)
return false;
if (actionId == EditorInfo.IME_ACTION_SEARCH
|| event.getKeyCode() == KeyEvent.KEYCODE_ENTER) {
.....Do some stuff();
}
}
我已经看到ClassName.this在SO和其他地方使用很多Android代码(而不是简单的this关键字)来引用类的当前实例.我理解你可能决定this在类名前加上以消除任何歧义,但根据我的经验,这样做通常是不必要的,因为实际上只有一件事this可以引用 - 代码执行的类的当前实例是否有其他我忽略的建议将this关键字与类名称对接是更好的做法,或者在某些情况下它实际上是必要的？
通常,您可以这样做:
$ echo "Stanley, you must beware of the Drive bee" > file-a
$ echo "What's a Drive bee?" > file-b
$ git init .
$ git add file-b
$ git commit file-b -m "We don't know, but whatever error you make with it could be fatal."
$ git reset --hard HEAD
$ ls
file-a file-b
我觉得我做得非常糟糕:
$ echo "What are you doing, you darn ?" > file-a
$ echo "Can't you see I'm trying to drive?" > file-
$ …最近我根据IDE的建议将Android Studio从0.4.2更新到0.5.0,将Android Gradle Plug-In从0.7.2更新到0.9.0.项目运行并安装良好,但是当我按下Build-> Rebuild Project时,它会抛出一个错误,停止重建.消息选项卡中出现以下错误:
Information:See complete output in console
Error:Execution failed for task ':projectName:proguardDebug'.
> java.io.IOException: Please correct the above warnings first.
以下是控制台中描述的问题:
:projectName:proguardDebug
Note: there were 2345 duplicate class definitions.
Warning: com.facebook.Settings: can't find referenced class com.facebook.android.BuildConfig
Warning: com.facebook.Settings: can't find referenced class com.facebook.android.BuildConfig
Warning: com.facebook.internal.Utility: can't find referenced class com.facebook.android.BuildConfig
Warning: com.facebook.internal.Utility: can't find referenced class com.facebook.android.BuildConfig
Warning: there were 4 unresolved references to classes or interfaces.
You may need to add missing library jars or …我正在尝试使用新的multidex选项,但是我收到以下错误:
Execution failed for task ':packageAll[Variant]TestClassesForMultiDex'.
> java.util.zip.ZipException: duplicate entry: android/support/multidex/BuildConfig.class
我已经能够发现问题只发生在运行connectedAndroidTests任务时,而不是简单地构建项目(构建)时.
我在 Rust 中看到了这种趋势，错误Result是这样返回的：
fn do_something() -> Result<SomeType, Box<dyn std::error::Error>> {
// ...
}
为什么错误是动态的？来自 C++ 背景并且更std::variant喜欢经典的多态性（我对Rust比较陌生），我对动态分配过敏，所以我只在真正需要的时候使用它们。我还发现 Rust 的枚举中包含变体非常棒。有人可以解释为什么使用错误作为枚举不是标准/首选/常见吗？
我正在尝试构建一个Uri,这是一种意图查询地图上某个位置的最正确的方法.在地图意图的文档中,指出Uris应具有以下形式:geo:0,0?q=my+street+address.我尝试使用Uri.Builder,但没有找到指定"0,0"
uri部分的方法,因为Uri.Builder没有指定路径的函数而没有预先添加'/'.目前我使用以下代码:
uri = new Uri.Builder()
.scheme(URL_SCHEME_MAP)
.encodedOpaquePart("0,0?q=" + query)
.build();
哪个好,但不如我想要的那么好.所以我想知道是否有人知道更好/更好的方法来做到这一点.
我想配对我的Android手机和SPP蓝牙没有针脚和确认对话.我有这个代码,注册BroadcastReceiver:
IntentFilter filter = new IntentFilter(ACTION_PAIRING_REQUEST);
registerReceiver(mPairReceiver, filter);
pairDevice(device);
pairDevice方法:
private void pairDevice(BluetoothDevice device) {
try {
Method method = device.getClass().getMethod("createBond", (Class[]) null);
method.invoke(device, (Object[]) null);
} catch (Exception e) {
e.printStackTrace();
}
}
BroadcastReceiver:
private final BroadcastReceiver mPairReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (ACTION_PAIRING_REQUEST.equals(action)) {
System.out.println("ACTION_PAIRING_REQUEST");
setBluetoothPairingPin(device);
}
}
};
setBluetoothPairingPin方法:
public void setBluetoothPairingPin(BluetoothDevice device)
{
byte[] pinBytes = convertPinToBytes("0000");
try {
Log.d(TAG, …摘要:iOS/OS 12中的第三方登录中断!
我们有一个适用于多个网站的通用登录.这在Windows,macOS和iOS上的Firefox,Chrome和Safari中运行良好.但是对于iOS 12和macOS 12,似乎cookie不再从auth0登录窗口工作到我们的登录API.
它不仅在Safari中停止工作,而且在iOS 12上也在Chrome和Firefox中停止工作(它仍适用于Mac OS 12上的Chrome).我怀疑这与智能跟踪预防2.0有关,但我很难找到许多技术细节.
我们的登录流程如下:
我在启动时使用以下内容:
services.AddAuthentication(options => {
options.DefaultAuthenticateScheme = CookieAuthenticationDefaults.AuthenticationScheme;
options.DefaultChallengeScheme = CookieAuthenticationDefaults.AuthenticationScheme;
options.DefaultSignInScheme = CookieAuthenticationDefaults.AuthenticationScheme;
})
.AddCookie(options =>
{
options.Cookie.Path = "/";
options.SlidingExpiration = false;
})
.AddOpenIdConnect("Auth0", options => {
// Set the authority to your Auth0 domain
options.Authority = $"https://{Configuration["Auth0:Domain"]}";
// Configure the Auth0 Client ID and Client Secret
options.ClientId = Configuration["Auth0:ClientId"];
options.ClientSecret = Configuration["Auth0:ClientSecret"];
// Set response type to code
options.ResponseType = "code";
// Configure the scope …