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POstart activity from custom dialog in android sdk 11 or higher
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  1. POstart activity from custom dialog in android sdk 11 or higher
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    copied!<p>I have a problem and I am very confiused. I have a Dialog that it contains a Button. I show the dialog in main Activity with this code, so simple:</p> <pre><code>InfoDialog id=new InfoDialog(this); id.show(); </code></pre> <p>and I want when I click on Button, it starts the second activity. you see it is so easy, I use this code:</p> <pre><code>public class InfoDialog extends Dialog implements android.view.View.OnClickListener{ Context context; public InfoDialog(Context context) { super(context); setContentView(R.layout.infodialog); this.context=context; setupViews(); } private void setupViews() { Button button=(Button)findViewById(R.id.button1); button.setOnClickListener(this); } @Override public void onClick(View v) { switch (v.getId()){ case R.id.button1: Intent newintent= new Intent(context,DestActivity.class); context.startActivity(newintent); break; } } </code></pre> <p>and I declare the destAct in Manifest too. when I run it on Gingerbread Android an older sdk versions it works fine. but when I run this code on ice cream sandwich (sdk 11) or higher it gives me force close!!! </p> <p>this is my log cat:</p> <pre><code>08-27 09:38:54.540: W/dalvikvm(10945): threadid=1: thread exiting with uncaught exception (group=0x40a3d1f8) 08-27 09:38:54.544: E/AndroidRuntime(10945): FATAL EXCEPTION: main 08-27 09:38:54.544: E/AndroidRuntime(10945): java.lang.NullPointerException 08-27 09:38:54.544: E/AndroidRuntime(10945): at my.app.InfoDialog.onClick(InfoDialog.java:131) 08-27 09:38:54.544: E/AndroidRuntime(10945): at android.view.View.performClick(View.java:3511) 08-27 09:38:54.544: E/AndroidRuntime(10945): at android.view.View$PerformClick.run(View.java:14105) 08-27 09:38:54.544: E/AndroidRuntime(10945): at android.os.Handler.handleCallback(Handler.java:605) 08-27 09:38:54.544: E/AndroidRuntime(10945): at android.os.Handler.dispatchMessage(Handler.java:92) 08-27 09:38:54.544: E/AndroidRuntime(10945): at android.os.Looper.loop(Looper.java:137) 08-27 09:38:54.544: E/AndroidRuntime(10945): at android.app.ActivityThread.main(ActivityThread.java:4575) 08-27 09:38:54.544: E/AndroidRuntime(10945): at java.lang.reflect.Method.invokeNative(Native Method) 08-27 09:38:54.544: E/AndroidRuntime(10945): at java.lang.reflect.Method.invoke(Method.java:511) 08-27 09:38:54.544: E/AndroidRuntime(10945): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789) 08-27 09:38:54.544: E/AndroidRuntime(10945): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556) 08-27 09:38:54.544: E/AndroidRuntime(10945): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>what the hell is this? please help me guys</p>
 

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