Android 抽屉布局和相对布局错误

我在抽屉布局中有

RelativeLayout

这是我的xml文件：

Activity_main.xml 这就是我运行应用程序时遇到的错误

LogCat

---

它以前从未真正面对过这个问题。我试图改变你的相对位置和抽屉布局，但没有成功。我想问题可能出在java文件中。有人知道如何解决这个问题吗？

看来您使用了错误的

LayoutParams

类；您是否正在导入每个机会的

RelativeLayout.LayoutParams

？

LayoutParams

因布局类型不同而不同。在抛出强制转换错误的位置（第255行），使用

DrawerLayout.LayoutParams

，应该可以工作。应该是这样的：

DrawerLayout.LayoutParams rlp = (DrawerLayout.LayoutParams) mSlidingLayer.getLayoutParams();`

---

它没有改变任何东西你能调试那行并检查一下什么类型的

mSlidingLayer

？

public class MainActivity extends ActionBarActivity implements NavigationDrawerFragment.NavigationDrawerCallbacks {

    private NavigationDrawerFragment mNavigationDrawerFragment;
    private CharSequence mTitle;
    private GoogleMap googleMap;
    private String urlJsonObj = "http://api.androidhive.info/volley/person_object.json";
    private String urlJsonArry = "http://heimerdinger.pe.hu/getjson.php";
    private static String TAG = MainActivity.class.getSimpleName();
    private ProgressDialog pDialog;
    Content content = new Content();
    public static String valueEntered;
    private String jsonResponse;
    private SlidingLayer mSlidingLayer;
    private TextView swipeText, fragNosaukums;
    public String name;
    public Marker marker;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        mNavigationDrawerFragment = (NavigationDrawerFragment)
                getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);
        mTitle = getTitle();

        // Set up the drawer.
        mNavigationDrawerFragment.setUp(
                R.id.navigation_drawer,
                (DrawerLayout) findViewById(R.id.drawer_layout));




       // fragNosaukums = (TextView) findViewById(R.id.fragNosaukums);

        googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
        googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
        googleMap.getUiSettings();
        googleMap.getUiSettings().setZoomControlsEnabled(true);
        googleMap.setMyLocationEnabled(true);

        bindViews();
        initState();

        mSlidingLayer.bringToFront();

        redirect();


        googleMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
            @Override
            public boolean onMarkerClick(Marker marker) {

                marker.showInfoWindow();
                String title = marker.getTitle();

                fragNosaukums.setText(title);
                mSlidingLayer.openLayer(true);

                return true;
            }
        });



    }


    @Override
    public void onNavigationDrawerItemSelected(int position) {
        // update the main content by replacing fragments
        FragmentManager fragmentManager = getSupportFragmentManager();
        fragmentManager.beginTransaction()
                .replace(R.id.container, PlaceholderFragment.newInstance(position + 1))
                .commit();
    }

    public void onSectionAttached(int number) {
        switch (number) {
            case 1:
                mTitle = getString(R.string.title_section1);
                break;
            case 2:
                mTitle = getString(R.string.title_section2);
                break;
            case 3:
                mTitle = getString(R.string.title_section3);
                break;
        }
    }

    public void restoreActionBar() {
        ActionBar actionBar = getSupportActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
        actionBar.setDisplayShowTitleEnabled(true);
        actionBar.setTitle(mTitle);
    }


    public static class PlaceholderFragment extends Fragment {
        /**
         * The fragment argument representing the section number for this
         * fragment.
         */
        private static final String ARG_SECTION_NUMBER = "section_number";

        /**
         * Returns a new instance of this fragment for the given section
         * number.
         */
        public static PlaceholderFragment newInstance(int sectionNumber) {
            PlaceholderFragment fragment = new PlaceholderFragment();
            Bundle args = new Bundle();
            args.putInt(ARG_SECTION_NUMBER, sectionNumber);
            fragment.setArguments(args);
            return fragment;
        }

        public PlaceholderFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_main, container, false);
            return rootView;
        }

        @Override
        public void onAttach(Activity activity) {
            super.onAttach(activity);
            ((MainActivity) activity).onSectionAttached(
                    getArguments().getInt(ARG_SECTION_NUMBER));
        }
    }








    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu, menu);

        return true;
    }

    @SuppressLint("NewApi")
    @Override
    protected void onResume() {
        super.onResume();

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            getActionBar().setDisplayHomeAsUpEnabled(true);

        }
    }

    /**
     * View binding
     */
    private void bindViews() {
        mSlidingLayer = (SlidingLayer) findViewById(R.id.slidingLayer1);
//        swipeText = (TextView) findViewById(R.id.swipeText);
    }

    /**
     * Initializes the origin state of the layer
     */
    private void initState() {

        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);

        setupSlidingLayerPosition(prefs.getString("layer_location", "right"));

        setupShadow(prefs.getBoolean("layer_has_shadow", false));
        setupLayerOffset(prefs.getBoolean("layer_has_offset", false));
        setupPreviewMode(prefs.getBoolean("preview_mode_enabled", false));
    }

    private void setupSlidingLayerPosition(String layerPosition) {

        DrawerLayout.LayoutParams rlp = (DrawerLayout.LayoutParams) mSlidingLayer.getLayoutParams();
        int textResource;
        Drawable d;

//        if (layerPosition.equals("right")) {
            textResource = R.string.swipe_right_label;
            d = getResources().getDrawable(R.drawable.container_rocket_right);

            mSlidingLayer.setStickTo(SlidingLayer.STICK_TO_RIGHT);


        d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
//        swipeText.setCompoundDrawables(null, d, null, null);
//        swipeText.setText(getResources().getString(textResource));
        mSlidingLayer.setLayoutParams(rlp);
    }

    private void setupShadow(boolean enabled) {
        if (enabled) {
            mSlidingLayer.setShadowSizeRes(R.dimen.shadow_size);
            mSlidingLayer.setShadowDrawable(R.drawable.sidebar_shadow);
        } else {
            mSlidingLayer.setShadowSize(0);
            mSlidingLayer.setShadowDrawable(null);
        }
    }

    private void setupLayerOffset(boolean enabled) {
        int offsetDistance = enabled ? getResources().getDimensionPixelOffset(R.dimen.offset_distance) : 0;
        mSlidingLayer.setOffsetDistance(offsetDistance);
    }

    private void setupPreviewMode(boolean enabled) {
        int previewOffset = enabled ? getResources().getDimensionPixelOffset(R.dimen.preview_offset_distance) : -1;
        mSlidingLayer.setPreviewOffsetDistance(previewOffset);
    }

    public void buttonClicked(View v) {
        switch (v.getId()) {
//        case R.id.buttonOpen:
//            mSlidingLayer.openLayer(true);
//            break;
//        case R.id.buttonClose:
//            mSlidingLayer.closeLayer(true);
//            break;
        }
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        switch (keyCode) {
        case KeyEvent.KEYCODE_BACK:
            if (mSlidingLayer.isOpened()) {
                mSlidingLayer.closeLayer(true);
                return true;
            }

        default:
            return super.onKeyDown(keyCode, event);
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {


            case R.id.addNewEvent:

                Intent intent = new Intent(this, AddEvent.class);
                startActivity(intent);
                ;

            case android.R.id.home:
                //Do stuff
                //mDrawerLayout.openDrawer(Gravity.LEFT);
                return true;
        }


        return true;
    }



}

04-18 17:39:13.878: E/AndroidRuntime(6607): FATAL EXCEPTION: main
04-18 17:39:13.878: E/AndroidRuntime(6607): Process: com.wunderlist.slidinglayersample, PID: 6607
04-18 17:39:13.878: E/AndroidRuntime(6607): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.wunderlist.slidinglayersample/com.wunderlist.slidinglayersample.MainActivity}: java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.support.v4.widget.DrawerLayout$LayoutParams
04-18 17:39:13.878: E/AndroidRuntime(6607):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at android.app.ActivityThread.access$800(ActivityThread.java:144)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at android.os.Handler.dispatchMessage(Handler.java:102)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at android.os.Looper.loop(Looper.java:135)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at android.app.ActivityThread.main(ActivityThread.java:5221)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at java.lang.reflect.Method.invoke(Native Method)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at java.lang.reflect.Method.invoke(Method.java:372)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
04-18 17:39:13.878: E/AndroidRuntime(6607): Caused by: java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.support.v4.widget.DrawerLayout$LayoutParams
04-18 17:39:13.878: E/AndroidRuntime(6607):     at android.support.v4.widget.DrawerLayout.isDrawerView(DrawerLayout.java:1126)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at android.support.v4.widget.DrawerLayout.closeDrawer(DrawerLayout.java:1331)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at com.wunderlist.slidinglayersample.MainActivity.onCreate(MainActivity.java:85)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at android.app.Activity.performCreate(Activity.java:5937)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
04-18 17:39:13.878: E/AndroidRuntime(6607):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)

DrawerLayout.LayoutParams rlp = (DrawerLayout.LayoutParams) mSlidingLayer.getLayoutParams();`