我在Activity
中包含了2个片段,当我打开第二个Fragment
时,键盘会立即弹出并要求您输入内容。
有两种方法可以关闭键盘。
发生的烦人的错误是,当我关闭第二个片段时,它会关闭片段和键盘,但是当你回到第一个片段时,键盘会再次弹回,如果用户在屏幕上的任何位置滑动,就会发生致命异常
以下是关于如何关闭第二片段上的键盘的代码:
当用户在第二个片段内的RelativeLayout
上滑动时,这是被调用的代码块:
relativeLayout.setOnTouchListener(new View.OnTouchListener() {
float startY = 0, endY = 0;
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()){
case MotionEvent.ACTION_DOWN:
startY = event.getY();
break;
case MotionEvent.ACTION_UP:
endY = event.getY();
if(Math.abs(startY - endY) > 200) {
onHideSoftKeyboard(editText);
getFragmentManager().popBackStack();
}
break;
}
return false;
}
});
public void onHideSoftKeyboard(final EditText editText) {
if (mContextWeakReference.get() != null) {
final InputMethodManager imm = (InputMethodManager) mContextWeakReference.get().getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(editText.getWindowToken(), 0);
}
}
用户发生异常:
Fatal Exception: java.lang.IllegalArgumentException: parameter must be a descendant of this view
at android.view.ViewGroup.offsetRectBetweenParentAndChild(ViewGroup.java:5191)
at android.view.ViewGroup.offsetDescendantRectToMyCoords(ViewGroup.java:5128)
at android.view.ViewRootImpl.scrollToRectOrFocus(ViewRootImpl.java:2978)
at android.view.ViewRootImpl.draw(ViewRootImpl.java:2647)
at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2577)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2169)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1180)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6563)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:777)
at android.view.Choreographer.doCallbacks(Choreographer.java:590)
at android.view.Choreographer.doFrame(Choreographer.java:560)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:763)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5835)
at java.lang.reflect.Method.invoke(Method.java)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
我该如何解决这个问题?