我使用了Android Studio中提供的导航抽屉模板。 在我的活动布局中,我有以下代码:
<fragment android:id="@+id/navigation_drawer"
android:layout_width="@dimen/navigation_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="start"
android:name="com.smedilepaolo.newsfeed.NavigationDrawer.NavigationDrawerFragment"
tools:layout="@layout/fragment_navigation_drawer" />
我需要通过编程方式改变面板的宽度。 我认为更改它的正确区域是这个:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_news_feed);
mNavigationDrawerFragment = (NavigationDrawerFragment)
getFragmentManager().findFragmentById(R.id.navigation_drawer);
mTitle = getTitle();
....
但是我不清楚如何实现我的目标。
/* 更新 */
抽屉面板的图标未显示在操作栏中。
mDrawerListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);
mDrawerListView.post(new Runnable() {
@Override
public void run() {
Resources resources = getResources();
float width = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 240, resources.getDisplayMetrics());
DrawerLayout.LayoutParams params = (DrawerLayout.LayoutParams) mDrawerListView.getLayoutParams();
params.width = (int) (width);
mDrawerListView.setLayoutParams(params);
}
});
selectItem(position);
}
});
mDrawerListView.post(new Runnable() {
@Override
public void run() {
Resources resources = getResources();
float width = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, resources.getDisplayMetrics().widthPixels-1, resources.getDisplayMetrics());
DrawerLayout.LayoutParams params = (DrawerLayout.LayoutParams) mDrawerListView.getLayoutParams();
params.width = (int) (width);
mDrawerListView.setLayoutParams(params);
mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
mDrawerLayout.openDrawer(mFragmentContainerView);
}
});
那就是selectItem方法。
private void selectItem(int position) {
mCurrentSelectedPosition = position;
if (mDrawerListView != null) {
mDrawerListView.setItemChecked(position, true);
}
if (mDrawerLayout != null) {
mDrawerLayout.closeDrawer(mFragmentContainerView);
}
....