我的应用程序允许用户按下按钮后打开相机,他们可以拍照,照片将显示在
以下是我的代码。我知道我忘记了一些东西,但就是想不出来!(诚实地说,我才开始学习android开发两周)。感谢任何帮助!
ImageView
中。如果用户在相机开启时按下返回键或取消键,我会收到这个强制关闭的错误 - Failure delivering result ResultInfo {who = null, request = 1888, result = 0, data = null} to activity... 所以我猜测result=0是问题所在,我需要插入什么来停止这个强制关闭呢?以下是我的代码。我知道我忘记了一些东西,但就是想不出来!(诚实地说,我才开始学习android开发两周)。感谢任何帮助!
private static final int CAMERA_REQUEST = 1888;
private ImageView imageView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
this.imageView = (ImageView)this.findViewById(R.id.photostrippic1);
ImageView photoButton = (ImageView) this.findViewById(R.id.photostrippic1);
photoButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
});
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_REQUEST) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(photo);
}
我猜我需要在那里加一个“else”,但我不确定怎么做。
以下是logcat
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1888, result=0, data=null} to activity {photo.booth.app/photo.booth.app.PhotoboothActivity}: java.lang.NullPointerException
at android.app.ActivityThread.deliverResults(ActivityThread.java:2934)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:2986)
at android.app.ActivityThread.access$2000(ActivityThread.java:132)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1068)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:150)
at android.app.ActivityThread.main(ActivityThread.java:4293)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at photo.booth.app.PhotoboothActivity.onActivityResult(PhotoboothActivity.java:76)
at android.app.Activity.dispatchActivityResult(Activity.java:4108)
at android.app.ActivityThread.deliverResults(ActivityThread.java:2930)
... 11 more