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我正在学习Android摄像头捕获，并将其设置为教程壁纸，但出现错误我试图找到，但无法找到它我设置另一个班的这个类bylistlistm点击这里是我的码。在Android设置中获取错误设置相机帮助Neded
public class Camera extends Activity implements View.OnClickListener {
ImageView iv;
ImageButton ib;
Button b;
Intent i;
final static int cameraData = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.photo);
initilize();
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.BResults:
break;
case R.id.ibtakenimage:
i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(i, cameraData);
break;
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
Bitmap bmp = (Bitmap) extras.get("Data");
iv.setImageBitmap(bmp);
}
}
public void initilize() {
iv = (ImageView) findViewById(R.id.IVimageview);
ib = (ImageButton) findViewById(R.id.ibtakenimage);
b = (Button) findViewById(R.id.BResults);
b.setOnClickListener(this);
ib.setOnClickListener(this);
}
}
，这里是我的logcat的。
01-14 02:37:21.770: E/Trace(1247): error opening trace file: No such file or directory (2)
01-14 02:37:22.200: D/dalvikvm(1247): GC_FOR_ALLOC freed 79K, 9% free 2442K/2660K, paused 55ms, total 57ms
01-14 02:37:22.210: I/dalvikvm-heap(1247): Grow heap (frag case) to 3.103MB for 614416-byte allocation
01-14 02:37:22.250: D/dalvikvm(1247): GC_FOR_ALLOC freed 2K, 7% free 3040K/3264K, paused 35ms, total 35ms
01-14 02:37:22.280: D/dalvikvm(1247): GC_CONCURRENT freed <1K, 7% free 3190K/3416K, paused 4ms+3ms, total 38ms
01-14 02:37:22.520: D/gralloc_goldfish(1247): Emulator without GPU emulation detected.
01-14 02:37:28.100: I/Choreographer(1247): Skipped 195 frames! The application may be doing too much work on its main thread.
01-14 02:37:28.270: I/Choreographer(1247): Skipped 30 frames! The application may be doing too much work on its main thread.
01-14 02:37:43.140: I/Choreographer(1247): Skipped 52 frames! The application may be doing too much work on its main thread.
01-14 02:37:43.440: D/AndroidRuntime(1247): Shutting down VM
01-14 02:37:43.460: W/dalvikvm(1247): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
----->>>> 01-14 02:37:43.530: E/AndroidRuntime(1247): FATAL EXCEPTION: main
01-14 02:37:43.530: E/AndroidRuntime(1247): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.androidme/com.example.androidme.Camera}: java.lang.NullPointerException
01-14 02:37:43.530: E/AndroidRuntime(1247): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
01-14 02:37:43.530: E/AndroidRuntime(1247): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
01-14 02:37:43.530: E/AndroidRuntime(1247): at android.app.ActivityThread.access$600(ActivityThread.java:141)
01-14 02:37:43.530: E/AndroidRuntime(1247): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
01-14 02:37:43.530: E/AndroidRuntime(1247): at android.os.Handler.dispatchMessage(Handler.java:99)
01-14 02:37:43.530: E/AndroidRuntime(1247): at android.os.Looper.loop(Looper.java:137)
01-14 02:37:43.530: E/AndroidRuntime(1247): at android.app.ActivityThread.main(ActivityThread.java:5041)
01-14 02:37:43.530: E/AndroidRuntime(1247): at java.lang.reflect.Method.invokeNative(Native Method)
01-14 02:37:43.530: E/AndroidRuntime(1247): at java.lang.reflect.Method.invoke(Method.java:511)
01-14 02:37:43.530: E/AndroidRuntime(1247): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
01-14 02:37:43.530: E/AndroidRuntime(1247): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
01-14 02:37:43.530: E/AndroidRuntime(1247): at dalvik.system.NativeStart.main(Native Method)
01-14 02:37:43.530: E/AndroidRuntime(1247): Caused by: java.lang.NullPointerException
01-14 02:37:43.530: E/AndroidRuntime(1247): at com.example.androidme.Camera.initilize(Camera.java:58)
01-14 02:37:43.530: E/AndroidRuntime(1247): at com.example.androidme.Camera.onCreate(Camera.java:24)
01-14 02:37:43.530: E/AndroidRuntime(1247): at android.app.Activity.performCreate(Activity.java:5104)
01-14 02:37:43.530: E/AndroidRuntime(1247): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
01-14 02:37:43.530: E/AndroidRuntime(1247): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
01-14 02:37:43.530: E/AndroidRuntime(1247): ... 11 more
---->错误开始。