我有两个包含一些编辑框的片段,它们的布局相似,但是很奇怪的是其中一个可以使用Tab键在编辑框间切换,而另一个却不能。以下是我遇到问题的那个片段:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/loginparent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff008DFF" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dip"
android:background="#ff008DFF"
android:orientation="vertical" >
<ImageView
android:id="@+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="40dip"
android:contentDescription="@string/logoDesc"
android:src="@drawable/logo1" />
<EditText
android:id="@+id/usernameLog"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:focusable="true"
android:focusableInTouchMode="true"
android:hint="@string/username"
android:imeOptions="actionNext"
android:singleLine="true"
android:textSize="14sp" />
<EditText
android:id="@+id/passwordLog"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/password"
android:imeOptions="actionDone"
android:inputType="textPassword"
android:singleLine="true"
android:textSize="14sp" />
<Button
android:id="@+id/loginButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/login" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dip" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:focusable="false"
android:focusableInTouchMode="false"
android:text="@string/newuser"
android:textColor="#ffffffff"
android:textSize="14sp" />
<Button
android:id="@+id/viewSignupBtn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/signup" />
</LinearLayout>
</LinearLayout>
<ProgressBar
android:id="@+id/progressBarLog"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:focusable="false"
android:focusableInTouchMode="false"
android:padding="70dip"
android:visibility="gone" />
</RelativeLayout>
当我从第一个EditText框中切换时,焦点消失,然后在第二个选项卡上它将焦点移动到第二个字段。如果我再次切换,则焦点消失,然后再次切换,它会出现在其下方的按钮上。
在片段的onCreateView中没有什么特别的事情,除了获取指向EditText字段的指针。像我说的那样,我有一个非常相似的第二个视图,工作正常。
当我按Tab键时,我注意到Logcat中显示这些警告:
04-24 19:31:29.695: D/InputEventConsistencyVerifier(2040): KeyEvent: ACTION_UP but key was not down.
04-24 19:31:29.695: D/InputEventConsistencyVerifier(2040): in android.support.v4.app.NoSaveStateFrameLayout@40f365b8
04-24 19:31:29.695: D/InputEventConsistencyVerifier(2040): 0: sent at 4325570000000, KeyEvent { action=ACTION_UP, keyCode=KEYCODE_TAB, scanCode=15, metaState=0, flags=0x8, repeatCount=0, eventTime=4325570, downTime=4325514, deviceId=0, source=0x101 }
04-24 19:31:31.076: D/InputEventConsistencyVerifier(2040): KeyEvent: ACTION_UP but key was not down.
04-24 19:31:31.076: D/InputEventConsistencyVerifier(2040): in android.widget.EditText@40f78e98
04-24 19:31:31.076: D/InputEventConsistencyVerifier(2040): 0: sent at 4326945000000, KeyEvent { action=ACTION_UP, keyCode=KEYCODE_TAB, scanCode=15, metaState=0, flags=0x8, repeatCount=0, eventTime=4326945, downTime=4326889, deviceId=0, source=0x101 }
04-24 19:31:32.255: D/InputEventConsistencyVerifier(2040): KeyEvent: ACTION_UP but key was not down.
04-24 19:31:32.255: D/InputEventConsistencyVerifier(2040): in android.widget.EditText@40f73678
04-24 19:31:32.255: D/InputEventConsistencyVerifier(2040): 0: sent at 4328123000000, KeyEvent { action=ACTION_UP, keyCode=KEYCODE_TAB, scanCode=15, metaState=0, flags=0x8, repeatCount=0, eventTime=4328123, downTime=4328053, deviceId=0, source=0x101 }
编辑 -----------------
好的,根据评论建议,我为所有视图添加了onFocusChanged监听器(循环遍历并添加监听器),并记录了视图是什么。每次我按Tab键时,都会得到日志,但奇怪的是,我按Tab键到第一个EditText框时,日志显示该editText框具有焦点,再次按Tab键焦点丢失,但日志仍然显示相同的EditText框具有焦点!再次按Tab键,第二个得到焦点,日志显示正确的id,再次按Tab键焦点丢失,但日志仍然显示第二个EditText框具有焦点,即使它没有!!
非常奇怪的行为。