I'm working on the Navigation Drawer for Android. As per my requirement I was to display gridview and listview of items in the navigation drawer. I have created a linearLayout in the layout xml file and placed the two widgets(Grid view, and Listview) in the LinearLayout.
When I run the file I'm getting the following error:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.navigationdrawer3/com.example.navigationdrawer3.MainActivity}: java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.support.v4.widget.DrawerLayout$LayoutParams
Below are my java, logcat, and NavigationDrawer layout files:
MainActivity.java
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,
};
}
}
activity_main.xml
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:id="@+id/drawer_layout">
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</FrameLayout>
<LinearLayout
android:id="@+id/linearLayout"
android:layout_width="320dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_gravity="left"
android:choiceMode="singleChoice"
android:divider="@android:color/transparent"
android:dividerHeight="0dp"
android:background="#111">
<GridView
android:id="@+id/gridview"
android:layout_width="280dp"
android:layout_height="match_parent"
android:stretchMode="columnWidth"
android:numColumns="auto_fit"/>
<!-- android:gravity="center" -->
<ListView
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
/>
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
logcat
07-30 06:15:57.203: W/dalvikvm(853): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
07-30 06:15:57.213: E/AndroidRuntime(853): FATAL EXCEPTION: main
07-30 06:15:57.213: E/AndroidRuntime(853): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.navigationdrawer3/com.example.navigationdrawer3.MainActivity}: java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.support.v4.widget.DrawerLayout$LayoutParams
07-30 06:15:57.213: E/AndroidRuntime(853): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
07-30 06:15:57.213: E/AndroidRuntime(853): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
07-30 06:15:57.213: E/AndroidRuntime(853): at android.app.ActivityThread.access$600(ActivityThread.java:141)
07-30 06:15:57.213: E/AndroidRuntime(853): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
07-30 06:15:57.213: E/AndroidRuntime(853): at android.os.Handler.dispatchMessage(Handler.java:99)
07-30 06:15:57.213: E/AndroidRuntime(853): at android.os.Looper.loop(Looper.java:137)
07-30 06:15:57.213: E/AndroidRuntime(853): at android.app.ActivityThread.main(ActivityThread.java:5041)
07-30 06:15:57.213: E/AndroidRuntime(853): at java.lang.reflect.Method.invokeNative(Native Method)
07-30 06:15:57.213: E/AndroidRuntime(853): at java.lang.reflect.Method.invoke(Method.java:511)
07-30 06:15:57.213: E/AndroidRuntime(853): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
07-30 06:15:57.213: E/AndroidRuntime(853): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
07-30 06:15:57.213: E/AndroidRuntime(853): at dalvik.system.NativeStart.main(Native Method)
07-30 06:15:57.213: E/AndroidRuntime(853): Caused by: java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.support.v4.widget.DrawerLayout$LayoutParams
07-30 06:15:57.213: E/AndroidRuntime(853): at android.support.v4.widget.DrawerLayout.isDrawerView(DrawerLayout.java:809)
07-30 06:15:57.213: E/AndroidRuntime(853): at android.support.v4.widget.DrawerLayout.closeDrawer(DrawerLayout.java:1012)
07-30 06:15:57.213: E/AndroidRuntime(853): at com.example.navigationdrawer3.MainActivity.selectItem(MainActivity.java:265)
07-30 06:15:57.213: E/AndroidRuntime(853): at com.example.navigationdrawer3.MainActivity.onCreate(MainActivity.java:86)
07-30 06:15:57.213: E/AndroidRuntime(853): at android.app.Activity.performCreate(Activity.java:5104)
07-30 06:15:57.213: E/AndroidRuntime(853): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
07-30 06:15:57.213: E/AndroidRuntime(853): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
07-30 06:15:57.213: E/AndroidRuntime(853): ... 11 more
The line of code at line 86:
selectItem(0);
The line of code at line 265:
mDrawerLayout.closeDrawer(mDrawerLayout);
I have tried to correct this run time erroe in many ways but failed to correct. Can any one suggest a answer for my problem.
Armaan Stranger
Answer:
mDrawerLayout.closeDrawer(mDrawerLayout);
had wrong Layout. so change in it with drawerlayout will work it out.
Jonik
What solved this issue for me:
In MainActivity, add a new field for the LinearLayout, and assign value to it in onCreate() (this part just like emaleavil suggested):
private LinearLayout linearLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// ...
linearLayout = (LinearLayout) findViewById(R.id.linearLayout);
}
Then in selectItem(), when calling closeDrawer(), simply pass linearLayout as argument:
drawerLayout.closeDrawer(linearLayout);
I had the same problem. I just got rid of using,
mDrawerLayout.closeDrawer(Gravity.LEFT);
I had the same issue... Solution in my case was:
In your MainActivity add:
private LinearLayout linearLayout;
public void onCreate(Bundle savedInstanceState){
...
linearLayout = (LinearLayout)findViewById(R.id.linearLayout);
...
}
OnPrepareOptionsMenu:
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
boolean drawerOpen = mDrawerLayout.isDrawerOpen(this.linearLayout);
menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
I'm sorry for my poor english.
I think you should place your content and drawer exactly as it is siad in the manual. Now yor XML structure doesn't match that. Note, that only the "id" field should match, the view types and parameters may be different.
finally I found the way to implement a custom listView in the drawer layout. This is the post that help me to do it...http://www.michenux.net/android-navigation-drawer-748.html
mDrawerLayout.closeDrawer(mDrawerLayout);
or
mDrawerLayout.closeDrawer(Gravity.LEFT);
both is ok.NOTE:you must know What is parameter.
Have a nice day !
来源：https://stackoverflow.com/questions/17939798/classcastexception-android-widget-framelayoutlayoutparams-to-android-support-v4