ClassCastException android.widget.FrameLayout$LayoutParams到android.support.v4.widget.DrawerLayout$LayoutParams
我正在为Android开发导航抽屉。 根据我的要求，我要在导航抽屉中显示项目的gridview和listview。我在布局xml文件中创建了一个linearLayout，并在linearLayout中放置了两个小部件（Grid view和Listview） 运行该文件时，出现以下错误： java.lang.RuntimeException:无法启动活动组件信息{com.example.navigationdrawer3/com.example.navigationdrawer3.MainActivity}:java.lang.ClassCastException:android.widget.FrameLayout$LayoutParams无法强制转换为android.support.v4.widget.DrawerLayout$LayoutParams 下面是我的java、logcat和NavigationDrawer布局文件： MainActivity.javaClassCastException android.widget.FrameLayout$LayoutParams到android.support.v4.widget.DrawerLayout$LayoutParams,android,android-layout,android-framelayout,navigation-drawer,drawerlayout,Android,Android Layout,Android Framelayout,Navigation Drawer,Drawerlayout,我正在为Android开发导航抽屉。 根据我的要求，我要在导航抽屉中显示项目的gridview和listview。我在布局xml文件中创建了一个linearLayout，并在linearLayout中放置了两个小部件（Grid view和Listview） 运行该文件时，出现以下错误： java.lang.RuntimeException:无法启动活动组件信息{com.example.navigationdrawer3/com.example.navigationdrawer3.MainActi
public class MainActivity extends Activity {
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
private CharSequence mDrawerTitle;
//@SuppressWarnings("unused")
private CharSequence mTitle;
private String[] mGalaxyTitles;
private GridView mDrawerGrid;
private LinearLayout mDrawerLinear;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTitle = mDrawerTitle = getTitle();
mGalaxyTitles = getResources().getStringArray(R.array.items_array);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
mDrawerGrid = (GridView)findViewById(R.id.gridview);
mDrawerLinear =(LinearLayout)findViewById(R.id.linearLayout);
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
mDrawerGrid.setAdapter(new ImageAdapter(MainActivity.this));
mDrawerList.setAdapter(new ArrayAdapter<String>(this,
R.layout.drawer_list_item, mGalaxyTitles));
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
mDrawerToggle = new ActionBarDrawerToggle(
this,
mDrawerLayout,
R.drawable.ic_drawer,
R.string.drawer_open,
R.string.drawer_close
) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(mDrawerTitle);
invalidateOptionsMenu();
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
invalidateOptionsMenu();
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
}
class DrawerItemClickListener implements ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub
switch(position){
case 0:
menu0();
return;
case 1:
menu1();
return;
case 2:
menu2();
return;
case 3:
menu3();
return;
case 4:
menu4();
return;
case 5:
menu5();
return;
case 6:
menu6();
return;
case 7:
menu7();
return;
case 8:
menu8();
return;
}
}
protected void menu0() {
Intent Main0 = new Intent(MainActivity.this, Page0.class);
startActivity(Main0);
return;
}
protected void menu1() {
Intent Main1 = new Intent(MainActivity.this, Page1.class);
startActivity(Main1);
return;
}
protected void menu2() {
Intent Main2 = new Intent(MainActivity.this, Page2.class);
startActivity(Main2);
return;
}
protected void menu3() {
Intent Main3 = new Intent(MainActivity.this, Page3.class);
startActivity(Main3);
return;
}
protected void menu4() {
Intent Main4 = new Intent(MainActivity.this, Page4.class);
startActivity(Main4);
return;
}
protected void menu5() {
Intent Main5 = new Intent(MainActivity.this, Page5.class);
startActivity(Main5);
return;
}
protected void menu6() {
Intent Main6 = new Intent(MainActivity.this, Page6.class);
startActivity(Main6);
return;
}
protected void menu7() {
Intent Main7 = new Intent(MainActivity.this, Page7.class);
startActivity(Main7);
return;
}
protected void menu8() {
Intent Main8 = new Intent(MainActivity.this, Page8.class);
startActivity(Main8);
return;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public void setTitle(CharSequence title) {
mTitle = title;
getActionBar().setTitle(mDrawerTitle);
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
//boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
//boolean drawerOpen2 = mDrawerLayout.isDrawerOpen(mDrawerGrid);
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerLayout);
menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
//menu.findItem(R.id.action_settings).setVisible(!drawerOpen2);
return super.onPrepareOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
switch(item.getItemId()) {
case R.id.action_settings:
setting();
return true;
case R.id.about:
about();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void about() {
// TODO Auto-generated method stub
Intent Main1 = new Intent(MainActivity.this, About.class);
startActivity(Main1);
return;
}
private void setting() {
// TODO Auto-generated method stub
Intent Main1 = new Intent(MainActivity.this, Setting.class);
startActivity(Main1);
return;
}
private void selectItem(int position) {
Fragment fragment = new GalaxyFragment();
Bundle args = new Bundle();
args.putInt(GalaxyFragment.ARG_GALAXY_NUMBER, position);
fragment.setArguments(args);
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
mDrawerList.setItemChecked(position, true);
setTitle(mGalaxyTitles[position]);
mDrawerLayout.closeDrawer(mDrawerLayout);
//mDrawerLayout.closeDrawer(mDrawerGrid);
}
class GalaxyFragment extends Fragment{
public static final String ARG_GALAXY_NUMBER = "galaxy_number";
public GalaxyFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.about, container, false);
return rootView;
}
}
//Gridview BaseAdapter class
class ImageAdapter extends BaseAdapter{
Context context;
ImageAdapter(Context context){
this.context = context;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return mThumbIds.length;
}
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ImageView imageView;
if(convertView == null){
imageView = new ImageView(context);
imageView.setLayoutParams(new GridView.LayoutParams(25, 25));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
}else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mThumbIds[position]);
return imageView;
}
// references to our images
private Integer[] mThumbIds = {
R.drawable.sample_2, R.drawable.sample_3,
R.drawable.sample_4, R.drawable.sample_5,
};
}
}
selectItem(0);
mDrawerLayout.closeDrawer(mDrawerLayout);
我曾尝试用多种方法纠正此运行时错误，但未能纠正。有谁能为我的问题提供一个答案。我认为你应该把你的内容和抽屉放在原样的地方。 现在，您的XML结构与此不匹配。注意，只有“id”字段应该匹配，视图类型和参数可能不同。回答：
mDrawerLayout.closeDrawer(mDrawerLayout);
有错误的布局。所以用抽屉布局来改变它会解决问题的 我也有同样的问题。。。我的解决方案是： 在主活动中添加：
private LinearLayout linearLayout;
public void onCreate(Bundle savedInstanceState){
...
linearLayout = (LinearLayout)findViewById(R.id.linearLayout);
...
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
boolean drawerOpen = mDrawerLayout.isDrawerOpen(this.linearLayout);
menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
很抱歉我的英语很差。是什么帮我解决了这个问题： 在
MainActivityLinearLayoutonCreate（）selectItem（）closeDrawer（）linearLayoutdrawerLayout.closeDrawer(linearLayout);
最后，我找到了在抽屉布局中实现自定义listView的方法。这是帮助我做到这一点的帖子…我也有同样的问题。我刚刚摆脱了使用
mDrawerLayout.closeDrawer(Gravity.LEFT);
祝你今天愉快 对于在抽屉布局内使用NavigationView时出现此异常，并且希望在不显示关闭动画的情况下关闭菜单的用户： 调用此方法： 抽屉布局。closeDrawer（navigationView，false） 第一个参数：膨胀布局中的navigationView，第二个参数：boolean以显示关闭动画 （使用com.google.android.material.navigation.NavigationView
androidx.drawerlayout.widget.drawerlayout）错误表明您正在将框架布局传递给抽屉布局。然后如何更正它。是否应该从布局文件中删除Framelayout？请尝试mDrawerLayout.closeDrawer（mDrawerList）；错误。但是现在它已经改变了，它正在显示java.lang.ClassCastException:android.widget.LinearLayout$LayoutParams无法强制转换为android.support.v4.widget.DrawerLayout$LayoutParams您是否传递了布局抽屉的正确布局？？再次检查它包含的内容。你看过Android版的Evernote吗。它们在抽屉布局中包含了gridview和listview。如果他们遵循了android开发者手册，那么他们是如何获得这种观点的呢。请导航到下面的链接以查看Evernote导航抽屉的图像@请参见69只需将id为“@+id/left_drawer”的ListView替换为具有相同id的RelativeLayout，然后在此布局中添加您想要的任何内容-网格或ListView，或其他任何内容。它将显示在您提供链接的图片上。另外，请考虑手册中的内容和抽屉布局的限制-现在你不指定抽屉的重力和宽度。我无法清楚地告诉你。你能给我发一个你描述的代码样本吗。这将是很有帮助的..嘿，我已经纠正了错误..现在列表视图没有显示在抽屉布局中，只有gridview显示。你能帮我纠正一下吗…@Seenu69你对XML做了什么修改吗？如果你有，请发布新的。+1，这为我指明了正确的方向。比公认的答案有用得多。（对我来说，
onPrepareOptionsMenuDrawerLayoutcloseDrawer（）linearLayout抽屉布局的第二个孩子private LinearLayout linearLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// ...
linearLayout = (LinearLayout) findViewById(R.id.linearLayout);
}
drawerLayout.closeDrawer(linearLayout);
mDrawerLayout.closeDrawer(Gravity.LEFT);
mDrawerLayout.closeDrawer(mDrawerLayout);
mDrawerLayout.closeDrawer(Gravity.LEFT);