我希望在整个应用程序中都有一个滑动菜单,我的应用程序中的每个活动都可以访问该菜单。为此,我创建了一个父活动,所有其他活动都按照此答案中的建议扩展到该活动. 因此,只有一个活动将实现该滑动菜单功能,而扩展该活动的所有其他活动都将具有该实现。但我的问题是,当我按下 UP 按钮(应用程序图标)时,滑动抽屉应该显示出来,整个布局应该移到右侧。这适用于 BaseActivity,但对于扩展该类的活动,它不起作用。既没有显示抽屉,也没有向右移动布局。我尝试将 toast 放入 BaseActivity 的适当方法中,显示 Toast 但抽屉未显示。可能是什么问题?
布局xml如下,
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rl_root"
android:layout_width="wrap_content"
android:layout_height="fill_parent" >
<RelativeLayout
android:id="@+id/ll_lhs_menu"
android:layout_width="300dip"
android:layout_height="fill_parent"
android:background="@color/menu_bg"
android:orientation="vertical"
android:visibility="visible" >
.......
Sliding drawer goes here.
.......
</RelativeLayout>
<!-- Following is the actual layout where in the layout for other activities
will be put in using the java code below. -->
<RelativeLayout
android:id="@+id/rl_right"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:background="@drawable/capture_port"
android:scrollbars="none" >
</RelativeLayout>
</RelativeLayout>
重写的setContentView()
方法如下:
@Override
public void setContentView(int layoutResID) {
_completeLayout= (RelativeLayout) getLayoutInflater().inflate(R.layout.menu, null);
_activityLayout= (RelativeLayout) _completeLayout.findViewById(R.id.rl_right);
getLayoutInflater().inflate(layoutResID, _activityLayout, true);
setContentView(_completeLayout);
}
单击操作栏上的 UP 按钮时,将执行以下代码BaseActivity
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
_leftLayout.setVisibility(View.VISIBLE);
int width = _leftLayout.getWidth();
if (width == 0) {
width = 300;
}
if (!isMenuVisible()) {
Toast.makeText(this, "Executed successfully...", Toast.LENGTH_LONG).show();
_leftLayout.setVisibility(View.VISIBLE);
_rightLayoutParams = new LayoutParams(
_rightLayout.getWidth(), _rightLayout.getHeight());
_rightLayoutParams.setMargins(width, 0, -width, 0);
_rightLayout.setLayoutParams(_rightLayoutParams);
Animation slideRight = setRightSlidingAnimation();
_leftLayout.startAnimation(slideRight);
_rightLayout.startAnimation(slideRight);
} else {
Animation slideLeft = setLeftSlidingAnimation();
_rightLayout.startAnimation(slideLeft);
_leftLayout.startAnimation(slideLeft);
}
setMenuVisible(!isMenuVisible());
break;
}
return false;
}