android 怎样edittext 键盘失去焦点时自动关闭
推荐回答(2个)
android 怎样edittext 键盘失去焦点时自动关闭 软键盘的原理 软键盘其实是一个Dialog。InputMethodService为我们的输入法创建了一个Dialog,并且对某些参数进行了设置,使之能够在底部或者全屏显示。当我们点击输入框时,系统会对当前的主窗口进行调整,以便留出相应的空间来显示该Dialog在底部,或者全屏。 2.活动主窗口调整 Android定义了一个属性windowSoftInputMode, 用它可以让程序控制活动主窗口调整的方式。我们可以在配置文件AndroidManifet.xml中对Activity进行设置。这个属性的设置将会影响两件事情: 1>软键盘的状态——隐藏或显示。 2>活动的主窗口调整——是否减少活动主窗口大小以便腾出空间放软键盘或是否当活动窗口的部分被软键盘覆盖时它的内容的当前焦点是可见的。 故该属性的设置必须是下面列表中的一个值,或一个“state…”值加一个“adjust…”值的组合。在任一组设置多个值,各个值之间用|分开。 "stateUnspecified":The state of the soft keyboard (whether it is hidden or visible) is not specified. The system will choose an appropriate state or rely on the setting in the theme. This is the default setting for the behavior of the soft keyboard. 软键盘的状态(隐藏或可见)没有被指定。系统将选择一个合适的状态或依赖于主题的设置。这个是软件盘行为的默认设置。 "stateUnchanged":The soft keyboard is kept in whatever state it was last in, whether visible or hidden, when the activity comes to the fore. 软键盘被保持上次的状态。 "stateHidden":The soft keyboard is hidden when the user chooses the activity — that is, when the user affirmatively navigates forward to the activity, rather than backs into it because of leaving another activity. 当用户选择该Activity时,软键盘被隐藏。 "stateAlwaysHidden":The soft keyboard is always hidden when the activity's main window has input focus. 软键盘总是被隐藏的。 "stateVisible":The soft keyboard is visible when that's normally appropriate (when the user is navigating forward to the activity's main window). 软键盘是可见的。 "stateAlwaysVisible":The soft keyboard is made visible when the user chooses the activity — that is, when the user affirmatively navigates forward to the activity, rather than backs into it because of leaving another activity. 当用户选择这个Activity时,软键盘是可见的。 "adjustUnspecified":It is unspecified whether the activity's main window resizes to make room for the soft keyboard, or whether the contents of the window pan to make the currentfocus visible on-screen. The system will automatically select one of these modes depending on whether the content of the window has any layout views that can scroll their contents. If there is such a view, the window will be resized, on the assumption that scrolling can make all of the window's contents visible within a smaller area. This is the default setting for the behavior of the main window. 它不被指定是否该Activity主窗口调整大小以便留出软键盘的空间,或是否窗口上的内容得到屏幕上当前的焦点是可见的。系统将自动选择这些模式中一种主要依赖于是否窗口的内容有任何布局视图能够滚动他们的内容。如果有这样的一个视图,这个窗口将调整大小,这样的假设可以使滚动窗口的内容在一个较小的区域中可见的。这个是主窗口默认的行为设置。也就是说,系统自动决定是采用平移模式还是压缩模式,决定因素在于内容是否可以滚动。 "adjustResize":(压缩模式)The activity's main window is always resized to make room for the soft keyboard on screen. 当软键盘弹出时,要对主窗口调整屏幕的大小以便留出软键盘的空间。 "adjustPan":(平移模式:当输入框不会被遮挡时,该模式没有对布局进行调整,然而当输入框将要被遮挡时,窗口就会进行平移。也就是说,该模式始终是保持输入框为可见。)The activity's main window is not resized to make room for the soft keyboard. Rather, the contents of the window are automatically panned so that the current focus is never obscured by the keyboard and users can always see what they are typing. This is generally less desirable than resizing, because the user may need to close the soft keyboard to get at and interact with obscured parts of the window. 该Activity主窗口并不调整屏幕的大小以便留出软键盘的空间。相反,当前窗口的内容将自动移动以便当前焦点从不被键盘覆盖和用户能总是看到输入内容的部分。这个通常是不期望比调整大小,因为用户可能关闭软键盘以便获得与被覆盖内容的交互操作。。 3.侦听软键盘的显示隐藏 有时候,借助系统本身的机制来实现主窗口的调整并非我们想要的结果,我们可能希望在软键盘显示隐藏的时候,手动的对布局进行修改,以便使软键盘弹出时更加美观。这时就需要对软键盘的显示隐藏进行侦听。 我们可以借助软键盘显示和隐藏时,对主窗口进行了重新布局这个特性来进行侦听。如果我们设置的模式为压缩模式,那么我们可以对布局的onSizeChanged函数进行跟踪,如果为平移模式,那么该函数可能不会被调用。 4.EditText默认不弹出软件键盘 方法一: 在AndroidMainfest.xml中选择哪个activity,设置windowSoftInputMode属性为adjustUnspecified|stateHidden 例如: android:label="@string/app_name" android:windowSoftInputMode="adjustUnspecified|stateHidden" android:configChanges="orientation|keyboardHidden"> 方法二: 让EditText失去焦点,使用EditText的clearFocus方法 例如:EditText edit=(EditText)findViewById(R.id.edit); edit.clearFocus(); 方法三: 强制隐藏Android输入法窗口 例如:EditText edit=(EditText)findViewById(R.id.edit); InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE); imm.hideSoftInputFromWindow(edit.getWindowToken(),0); 5.EditText始终不弹出软件键盘 例:EditText edit=(EditText)findViewById(R.id.edit); edit.setInputType(InputType.TYPE_NULL);
在我们的应用中,有时候一进入一个页面, EditText默认就会自动获取焦点。弹出输入法框,用户体验很不好, 那么如何取消这个默认行为呢? ps:这篇文字是一年前写的,现在有网友再问这个问题,我进行重新编辑--2014.05.07,目前有更好的办法,第一种方法局限性很强,大家可以使用第二种方法 第一种方法:.在网上找了好久,有点监听软键盘事件的方法,有调用 clearFouse()方法,但是测试了都不行!在对应的 xml中也找不到相应的属性可以关闭这个默认行为。 后来研究了一下,在其父控件下,添加如下的属性,就可以完美解决: android:focusable="true" android:focusableInTouchMode="true" 举例如下: android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:focusable ="true" android:focusableInTouchMode="true" > android:id="@+id/et_enter_msg_content" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" /> android:id="@+id/sent" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/send" /> 第二种方法:直接关闭输入法 ? 1 2 3 4 5 6 7 8 private void closeInputMethod() { InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); boolean isOpen = imm.isActive(); if (isOpen) { // imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);//没有显示则显示 imm.hideSoftInputFromWindow(mobile_topup_num.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS); } } 调用这个方法体就行了,具体if语句里面的几个参数,我就借用一个网友的日志来写把(在此感谢) ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1、方法一(如果输入法在窗口上已经显示,则隐藏,反之则显示) InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS); 2、方法二(view为接受软键盘输入的视图,SHOW_FORCED表示强制显示) InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); imm.showSoftInput(view,InputMethodManager.SHOW_FORCED); [java] view plaincopy imm.hideSoftInputFromWindow(view.getWindowToken(), 0); //强制隐藏键盘 3、调用隐藏系统默认的输入法 ((InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE)).hideSoftInputFromWindow(WidgetSearchActivity.this.getCurrentFocus().getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS); (WidgetSearchActivity是当前的Activity) 4、获取输入法打开的状态 InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE); boolean isOpen=imm.isActive();//isOpen若返回true,则表示输入法打开 好了,祝大家玩的开心
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