点击预览空指针

[Jack-bin183]

安卓8和安卓10均报空指针，其他功能正常

    <activity android:name="com.donkingliang.imageselector.ImageSelectorActivity"
    android:theme="@style/Theme.AppCompat.Light.NoActionBar"
    android:configChanges="orientation|keyboardHidden|screenSize"/>

    <activity android:name="com.donkingliang.imageselector.PreviewActivity"
        android:theme="@style/Theme.AppCompat.Light.NoActionBar"
        android:configChanges="orientation|keyboardHidden|screenSize"/>

    <activity
        android:name="com.donkingliang.imageselector.ClipImageActivity"
        android:theme="@style/Theme.AppCompat.Light.NoActionBar" />

    <activity
        android:name=".wxapi.WXEntryActivity"
        android:configChanges="keyboardHidden|orientation|screenSize"
        android:exported="true"
        android:theme="@android:style/Theme.Translucent.NoTitleBar"/>

java代码： //单选并剪裁 ImageSelector.builder() .useCamera(true) // 设置是否使用拍照 .setCrop(true) // 设置是否使用图片剪切功能。 .setCropRatio(1.0f) // 图片剪切的宽高比,默认1.0f。宽固定为手机屏幕的宽。 .setSingle(true) //设置是否单选 .canPreview(true) //是否可以预览图片，默认为true .start(this, REQ_CD_IMAGE); // 打开相册

错误log： E/AndroidRuntime: FATAL EXCEPTION: main Process: com.yayan.app, PID: 13904 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.yayan.app/com.donkingliang.imageselector.PreviewActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.ViewGroup$LayoutParams android.widget.RelativeLayout.getLayoutParams()' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2983) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3061) at android.app.ActivityThread.-wrap12(Unknown Source:0) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1747) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:192) at android.app.ActivityThread.main(ActivityThread.java:6825) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:886) Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.ViewGroup$LayoutParams android.widget.RelativeLayout.getLayoutParams()' on a null object reference at com.donkingliang.imageselector.PreviewActivity.initView(PreviewActivity.java:125) at com.donkingliang.imageselector.PreviewActivity.onCreate(PreviewActivity.java:107) at android.app.Activity.performCreate(Activity.java:7066) at android.app.Activity.performCreate(Activity.java:7057) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1216) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2931) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3061)  at android.app.ActivityThread.-wrap12(Unknown Source:0)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1747)  at android.os.Handler.dispatchMessage(Handler.java:106)  at android.os.Looper.loop(Looper.java:192)  at android.app.ActivityThread.main(ActivityThread.java:6825)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:886) 

[Jack-bin183]

很奇怪的问题，我把module拉到本地发现是找不到activity_preview里面的id，应该是和某个库的xml名称重叠了，重命名activity_preview2问题解决

[hpmdr]

没有Import R？