java.lang.RuntimeException:将结果 ResultInfo{who=null, request=1888, result=0, data=null} 传递给活动失败
我的应用程序允许用户按下按钮,打开相机,他们可以拍照,照片将显示在 ImageView
中。如果用户在相机打开时按后退或取消,我会强制关闭 - 无法将结果 ResultInfo{who=null, request=1888, result=0, data=null} 传递给活动...所以我猜测结果=0 是我需要插入什么来使此停止强制关闭的问题吗?
下面是我的代码。我知道我忘记了一些东西,但就是想不起来! (诚然,我学习 Android 开发大约有两周时间)。感谢您的帮助!
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);
}
我想我需要在某个地方有一个“其他”,但我不知道该怎么做。
下面是日志猫
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
My app allows the user to press a button, it opens the camera, they can take a photo and it will show up in an ImageView
. If the user presses back or cancel while the camera is open I get this force close - Failure delivering result ResultInfo{who=null, request=1888, result=0, data=null} to activity... so i am guessing the result=0 is the issue what would I need to insert to make this stop force closing?
Below is my code. I know I am forgetting something but just cant figure it out! (Admittedly I am about 2 weeks into learning android development). Thanks for any help!
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);
}
I guess I would need a "else" in there somewhere but I dont exactly know to do that.
below is the 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
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评论(11)
添加第一个条件应该有效:
Adding this first conditional should work:
对于 Kotlin 用户,不要忘记添加 ?在
数据中:意图?
喜欢
For Kotlin Users don't forget to add ? in
data: Intent?
like
如果用户取消请求,数据将返回为
NULL
。当您调用data.getExtras().get("data");
时,线程将抛出nullPointerException
。我认为你只需要添加一个条件来检查返回的数据是否为空。If the user cancel the request, the data will be returned as
NULL
. The thread will throw anullPointerException
when you calldata.getExtras().get("data");
. I think you just need to add a conditional to check if the data returned is null.对于 Kotlin 用户
您只需在
onActivityResult
中添加带有 Intent 的 ?,因为如果用户取消,数据可能为null
交易或出现任何问题。因此,我们需要在onActivityResult
中将数据定义为nullable
只需将 SampleActivity 的
onActivityResult
签名替换为以下内容:For Kotlin Users
You just need to add ? with Intent in
onActivityResult
as the data can benull
if user cancels the transaction or anything goes wrong. So we need to define data asnullable
inonActivityResult
Just replace
onActivityResult
signature of SampleActivity with below:我建议使用这个:
检索父亲
Intent
。直接传达消息。
这可以防止其活动丢失,从而产生空数据错误。
I recommend using this:
Retrieve the father
Intent
.Convey the message directly.
This prevents the loss of its activity which would generate a null data error.
您可以检查 resultCode 是否等于 RESULT_OK,只有在拍摄并选择照片并且一切正常的情况下才会出现这种情况。这里的 if 子句应该检查每个条件。
You can check if the resultCode equals RESULT_OK this will only be the case if a picture is taken and selected and everything worked. This if clause here should check every condition.
这是我的情况
startActivityForResult(intent, PICK_IMAGE_REQUEST);
我定义了两个具有相同值的请求代码
PICK_IMAGE_REQUEST
和SCAN_BARCODE_REQUEST
,例如。static final int BARCODE_SCAN_REQUEST = 1;
static final int PICK_IMAGE_REQUEST = 1;
这也可能导致问题
this is my case
startActivityForResult(intent, PICK_IMAGE_REQUEST);
I defined two request code
PICK_IMAGE_REQUEST
andSCAN_BARCODE_REQUEST
with the same value, eg.static final int BARCODE_SCAN_REQUEST = 1;
static final int PICK_IMAGE_REQUEST = 1;
this could also causes the problem
我收到此错误消息是因为我在主线程上使用网络,而新版本的 Android 有一个“严格”策略来防止这种情况发生。要解决这个问题,只需将任何网络连接调用放入 AsyncTask 中即可。
例子:
I had this error message show up for me because I was using the network on the main thread and new versions of Android have a "strict" policy to prevent that. To get around it just throw whatever network connection call into an AsyncTask.
Example:
我也遇到了这个问题,我通过添加两个条件解决了它,一个是:
另一个是:
I also encountered this question, I solved it through adding two conditions one is:
the other is:
我的问题出在被调用的活动中,当它尝试通过“完成”返回到上一个活动时。我错误地设定了意图。以下代码是 Kotlin。
我正在这样做:
当我应该这样做时:
My problem was in the called activity when it tries to return to the previous activity by "finishing." I was incorrectly setting the intent. The following code is Kotlin.
I was doing this:
When I should have been doing this:
当我尝试传递可序列化的模型对象时,我遇到了这个问题。在该模型内,另一个模型是一个变量,但不可序列化。这就是我面临这个问题的原因。确保模型内的所有模型都是可序列化的。
I faced this problem when I tried to pass a serializable model object. Inside that model, another model was a variable but that wasn't serializable. That's why I face this problem. Make sure all the model inside of an model is serializable.