Android系统中是否有一种方法可以检测软件(也就是Android。“软”)键盘在屏幕上可见吗?
当前回答
没有直接的方法-请参阅http://groups.google.com/group/android-platform/browse_thread/thread/1728f26f2334c060/5e4910f0d9eb898a,来自Android团队的Dianne Hackborn已经回复。但是,您可以通过检查#onMeasure中窗口大小是否改变来间接检测它。参见如何检查软件键盘的可见性在Android?。
其他回答
final View activityRootView = findViewById(R.id.rootlayout);
activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
Rect r = new Rect();
activityRootView.getWindowVisibleDisplayFrame(r);
int screenHeight = activityRootView.getRootView().getHeight();
Log.e("screenHeight", String.valueOf(screenHeight));
int heightDiff = screenHeight - (r.bottom - r.top);
Log.e("heightDiff", String.valueOf(heightDiff));
boolean visible = heightDiff > screenHeight / 3;
Log.e("visible", String.valueOf(visible));
if (visible) {
Toast.makeText(LabRegister.this, "I am here 1", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(LabRegister.this, "I am here 2", Toast.LENGTH_SHORT).show();
}
}
});
可以使用showSoftInput()和hideSoftInput()的回调结果来检查键盘的状态。完整的细节和示例代码在
https://rogerkeays.com/how-to-check-if-the-software-keyboard-is-shown-in-android
private fun isKeyboardVisible(rootView: View) =
ViewCompat.getRootWindowInsets(rootView)!!.isVisible(WindowInsetsCompat.Type.ime())
试试这个:
InputMethodManager imm = (InputMethodManager) getActivity()
.getSystemService(Context.INPUT_METHOD_SERVICE);
if (imm.isAcceptingText()) {
writeToLog("Software Keyboard was shown");
} else {
writeToLog("Software Keyboard was not shown");
}
这是如何在一个片段中使用软键盘状态监听器(适用于API 21及以上)
private var currentWindowInsets: WindowInsetsCompat = WindowInsetsCompat.Builder().build()
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
setWindowInsetsAnimationCallback(requireView().rootView, object : Callback(DISPATCH_MODE_CONTINUE_ON_SUBTREE) {
override fun onProgress(insets: WindowInsetsCompat, runningAnimations: MutableList<WindowInsetsAnimationCompat>): WindowInsetsCompat {
currentWindowInsets = insets
return insets
}
override fun onEnd(animation: WindowInsetsAnimationCompat) {
super.onEnd(animation)
val keyboardIsVisible = currentWindowInsets.isVisible(WindowInsetsCompat.Type.ime())
if (keyboardIsVisible) { //do your stuff }
}
})
}
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