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POMenu Sliding error - android
 

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  1. POMenu Sliding error - android
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    <p>I tried to make a menu sliding but I can't.</p> <p>My application returns this error:</p> <pre><code>08-09 13:19:35.661: E/AndroidRuntime(1468): FATAL EXCEPTION: main 08-09 13:19:35.661: E/AndroidRuntime(1468): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.menusliderteste/com.example.menusliderteste.MainActivity}: java.lang.NullPointerException 08-09 13:19:35.661: E/AndroidRuntime(1468): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1736) 08-09 13:19:35.661: E/AndroidRuntime(1468): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1752) 08-09 13:19:35.661: E/AndroidRuntime(1468): at android.app.ActivityThread.access$1500(ActivityThread.java:123) 08-09 13:19:35.661: E/AndroidRuntime(1468): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:993) 08-09 13:19:35.661: E/AndroidRuntime(1468): at android.os.Handler.dispatchMessage(Handler.java:99) 08-09 13:19:35.661: E/AndroidRuntime(1468): at android.os.Looper.loop(Looper.java:126) 08-09 13:19:35.661: E/AndroidRuntime(1468): at android.app.ActivityThread.main(ActivityThread.java:3997) 08-09 13:19:35.661: E/AndroidRuntime(1468): at java.lang.reflect.Method.invokeNative(Native Method) 08-09 13:19:35.661: E/AndroidRuntime(1468): at java.lang.reflect.Method.invoke(Method.java:491) 08-09 13:19:35.661: E/AndroidRuntime(1468): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 08-09 13:19:35.661: E/AndroidRuntime(1468): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 08-09 13:19:35.661: E/AndroidRuntime(1468): at dalvik.system.NativeStart.main(Native Method) 08-09 13:19:35.661: E/AndroidRuntime(1468): Caused by: java.lang.NullPointerException 08-09 13:19:35.661: E/AndroidRuntime(1468): at android.view.ViewGroup.addView(ViewGroup.java:2774) 08-09 13:19:35.661: E/AndroidRuntime(1468): at android.view.ViewGroup.addView(ViewGroup.java:2761) 08-09 13:19:35.661: E/AndroidRuntime(1468): at com.jeremyfeinstein.slidingmenu.lib.CustomViewAbove.setContent(CustomViewAbove.java:436) 08-09 13:19:35.661: E/AndroidRuntime(1468): at com.jeremyfeinstein.slidingmenu.lib.SlidingMenu.setContent(SlidingMenu.java:356) 08-09 13:19:35.661: E/AndroidRuntime(1468): at com.jeremyfeinstein.slidingmenu.lib.SlidingMenu.attachToActivity(SlidingMenu.java:332) 08-09 13:19:35.661: E/AndroidRuntime(1468): at com.jeremyfeinstein.slidingmenu.lib.SlidingMenu.attachToActivity(SlidingMenu.java:292) 08-09 13:19:35.661: E/AndroidRuntime(1468): at com.example.menusliderteste.MainActivity.onCreate(MainActivity.java:25) 08-09 13:19:35.661: E/AndroidRuntime(1468): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048) 08-09 13:19:35.661: E/AndroidRuntime(1468): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1700) 08-09 13:19:35.661: E/AndroidRuntime(1468): ... 11 more </code></pre> <p>this is my Activity:</p> <pre><code>enter code here public class MainActivity extends Activity { private SlidingMenu slidingMenu; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); slidingMenu = new SlidingMenu(this); slidingMenu.setMode(SlidingMenu.LEFT); slidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN); slidingMenu.setShadowWidthRes(R.dimen.slidingmenu_shadow_width); slidingMenu.setShadowDrawable(R.drawable.slidingmenu_shadow); slidingMenu.setBehindOffsetRes(R.dimen.slidingmenu_offset); slidingMenu.setFadeDegree(0.35f); slidingMenu.attachToActivity(this, SlidingMenu.SLIDING_CONTENT); slidingMenu.setMenu(R.layout.slidingmenu); getActionBar().setDisplayHomeAsUpEnabled(true); } @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 onBackPressed() { if ( slidingMenu.isMenuShowing()) { slidingMenu.toggle(); } else { super.onBackPressed(); } } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if ( keyCode == KeyEvent.KEYCODE_MENU ) { this.slidingMenu.toggle(); return true; } return super.onKeyDown(keyCode, event); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: this.slidingMenu.toggle(); return true; default: return super.onOptionsItemSelected(item); } } } </code></pre>
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