无法在Android api> = 24上使用java.lang.IllegalArgumentException恢复活动

Question

我的应用程序在运行版本的设备上发生崩溃7.0,7.1.1并8.0.0使用以下堆栈跟踪:

Fatal Exception: java.lang.RuntimeException: Unable to resume activity {xxx/xxx.views.activities.HomeActivity}: java.lang.IllegalArgumentException
   at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3788)
   at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3828)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2991)
   at android.app.ActivityThread.-wrap14(ActivityThread.java)
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1635)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:154)
   at android.app.ActivityThread.main(ActivityThread.java:6692)
   at java.lang.reflect.Method.invoke(Method.java)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1468)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1358)
Caused by java.lang.IllegalArgumentException
   at android.os.Parcel.readException(Parcel.java:1697)
   at android.os.Parcel.readException(Parcel.java:1646)
   at android.app.ActivityManagerProxy.isTopOfTask(ActivityManagerNative.java:6600)
   at android.app.Activity.isTopOfTask(Activity.java:6142)
   at android.app.Activity.onResume(Activity.java:1331)
   at android.support.v4.app.FragmentActivity.onResume(FragmentActivity.java:485)
   at xxx.views.activities.BaseActivity.onResume(BaseActivity.java:50)
   at xxx.views.activities.HomeActivity.onResume(HomeActivity.java:364)
   at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1277)
   at android.app.Activity.performResume(Activity.java:7058)
   at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3765)
   at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3828)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2991)
   at android.app.ActivityThread.-wrap14(ActivityThread.java)
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1635)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:154)
   at android.app.ActivityThread.main(ActivityThread.java:6692)
   at java.lang.reflect.Method.invoke(Method.java)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1468)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1358)

我在报告的行上的代码很简单:

// HomeActivity class
@Override
public void onResume() {
    mPresenter.onResume();
    super.onResume();

    renderView();
}

// BaseActivity class
@Override
protected void onResume() {
    super.onResume();
    // some other code
}

我做了一些挖掘,发现了类似的问题.

由于IllegalArgumentException抛出不包含任何详细信息,我将尝试按照此处的建议添加额外的日志.

同时请欣赏任何帮助!

Answer 1

问题出在你的包裹上。您需要找到 Activity、Fragment、View 在哪里保存 Parcel 来保存状态。会有顺序错误。例如

@Override
protected Parcelable onSaveInstanceState() {
    Parcelable superState = super.onSaveInstanceState();

    final CharSequence textFromEditText = mTextView.getText();
    if (textFromEditText != null) {
        SavedState savedState = new SavedState(superState);
        savedState.text = textFromEditText.toString();
        return savedState;
    }
    return superState;
}

@Override
protected void onRestoreInstanceState(Parcelable state) {
    if (!(state instanceof SavedState)) {
        super.onRestoreInstanceState(state);
        return;
    }

    SavedState savedState = (SavedState) state;
    super.onRestoreInstanceState(savedState.getSuperState());
    if (!TextUtils.isEmpty(savedState.text)) {
        mTextView.setText(savedState.text);
    }
}

private static class SavedState extends BaseSavedState {
    String text;

    private SavedState(Parcelable superState) {
        super(superState);
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        super.writeToParcel(dest, flags);
        dest.writeString(text);
    }

    private SavedState(Parcel source) {
        super(source);
        text = source.readString();
    }

    public static final Creator<SavedState> CREATOR = new Creator<SavedState>() {

        @Override
        public SavedState createFromParcel(Parcel source) {
            return new SavedState(source);
        }

        @Override
        public SavedState[] newArray(int size) {
            return new SavedState[size];
        }
    };
}

所以问题可能出在某个地方

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        super.writeToParcel(dest, flags);
        dest.writeString(text);
    }

    private SavedState(Parcel source) {
        super(source);
        text = source.readString();
    }

当 Parcel 源读取的顺序不好时。