Я получаю сообщение об ошибке nullpointerexception в этой строке
btn10.setOnClickListener(this);
Это вся Java
package com.james.helloandroid2;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
//** activity
public class HelloAndroid2 extends Activity implements OnClickListener, ColorPickerDialog.OnColorChangedListener {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.pokertable);
//** imagebuttons
ImageView button10 = (ImageView) findViewById(R.id.button10);
button10.setOnClickListener(this);
View btn9 = (View) findViewById(R.id.button9);
//btn9.setOnClickListener(this);
View btn8 = (View) findViewById(R.id.button8);
//btn8.setOnClickListener(this);
View btn7 = (View) findViewById(R.id.button7);
//btn7.setOnClickListener(this);
View btn6 = (View) findViewById(R.id.button6);
//btn6.setOnClickListener(this);
View btn5 = (View) findViewById(R.id.button5);
//btn5.setOnClickListener(this);
View btn4 = (View) findViewById(R.id.button4);
//btn4.setOnClickListener(this);
View btn3 = (View) findViewById(R.id.button3);
//btn3.setOnClickListener(this);
View btn2 = (View) findViewById(R.id.button2);
//btn2.setOnClickListener(this);
View btn1 = (View) findViewById(R.id.button1);
//btn1.setOnClickListener(this); {
}
//** not in use yet.
public void colorChanged(int color) {
// TODO Auto-generated method stub
}
public void onClick(View v) {
// TODO Auto-generated method stub
ColorPickerDialog dialog = new ColorPickerDialog(this, null, 0);
dialog.show();
}
}
Я не уверен, почему, если кто-то может помочь.
также просто пс.у меня есть некоторые вещи, перерезанные в прямом направлении, так что они исключены в моем коде ... больше примечаний для меня или кода, который я жду, чтобы фактически использовать.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/relativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="clip_horizontal"
android:layout_weight="0.20"
android:background="@drawable/tablebackground"
android:gravity="top" >
<ImageView
android:id="@+id/button8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="@string/seat5"
android:src="@drawable/shapebutton5" />
<ImageView
android:id="@+id/button10"
android:layout_width="55dp"
android:layout_height="40dp"
android:layout_marginTop="5dp"
android:layout_centerHorizontal="true"
android:src="@drawable/shapebutton10" />
<ImageView
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:layout_marginLeft="31dp"
android:layout_toRightOf="@+id/button10"
android:onClick="onMyButtonClick"
android:src="@drawable/shapebutton1" />
<ImageView
android:id="@+id/button7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:layout_marginRight="30dp"
android:layout_toLeftOf="@+id/button10"
android:src="@drawable/shapebutton9" />
<ImageView
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button7"
android:layout_alignParentBottom="true"
android:src="@drawable/shapebutton6" />
<ImageView
android:id="@+id/button6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button3"
android:layout_alignParentBottom="true"
android:src="@drawable/shapebutton4" />
<ImageView
android:id="@+id/button5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/button6"
android:layout_alignParentRight="true"
android:layout_marginRight="25dp"
android:src="@drawable/shapebutton3" />
<ImageView
android:id="@+id/button4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button5"
android:layout_below="@+id/button3"
android:src="@drawable/shapebutton2" />
<ImageView
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/button5"
android:layout_alignBottom="@+id/button5"
android:layout_alignParentLeft="true"
android:layout_marginLeft="19dp"
android:src="@drawable/shapebutton7" />
<ImageView
android:id="@+id/button9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/button4"
android:layout_alignBottom="@+id/button4"
android:layout_alignLeft="@+id/button1"
android:src="@drawable/shapebutton8" />
</RelativeLayout>
01-18 23:09:31.842: D/AndroidRuntime(810): Shutting down VM
01-18 23:09:31.842: W/dalvikvm(810): threadid=1: thread exiting with uncaught exception (group=0x40015560)
01-18 23:09:31.852: E/AndroidRuntime(810): FATAL EXCEPTION: main
01-18 23:09:31.852: E/AndroidRuntime(810): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.james.helloandroid2/com.james.helloandroid2.HelloAndroid2}: java.lang.NullPointerException
01-18 23:09:31.852: E/AndroidRuntime(810): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
01-18 23:09:31.852: E/AndroidRuntime(810): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
01-18 23:09:31.852: E/AndroidRuntime(810): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
01-18 23:09:31.852: E/AndroidRuntime(810): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
01-18 23:09:31.852: E/AndroidRuntime(810): at android.os.Handler.dispatchMessage(Handler.java:99)
01-18 23:09:31.852: E/AndroidRuntime(810): at android.os.Looper.loop(Looper.java:123)
01-18 23:09:31.852: E/AndroidRuntime(810): at android.app.ActivityThread.main(ActivityThread.java:3683)
01-18 23:09:31.852: E/AndroidRuntime(810): at java.lang.reflect.Method.invokeNative(Native Method)
01-18 23:09:31.852: E/AndroidRuntime(810): at java.lang.reflect.Method.invoke(Method.java:507)
01-18 23:09:31.852: E/AndroidRuntime(810): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
01-18 23:09:31.852: E/AndroidRuntime(810): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
01-18 23:09:31.852: E/AndroidRuntime(810): at dalvik.system.NativeStart.main(Native Method)
01-18 23:09:31.852: E/AndroidRuntime(810): Caused by: java.lang.NullPointerException
01-18 23:09:31.852: E/AndroidRuntime(810): at com.james.helloandroid2.HelloAndroid2.onCreate(HelloAndroid2.java:23)
01-18 23:09:31.852: E/AndroidRuntime(810): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
01-18 23:09:31.852: E/AndroidRuntime(810): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
01-18 23:09:31.852: E/AndroidRuntime(810): ... 11 more