设置 ImageView 单击方法时出现 IllegalStateException

Question

我正在尝试允许单击 ImageView 以启动意图并打开新的 activity。我读过一些以编程方式执行此操作的问题（我正在使用 butterknife），所以我想我会尝试通过 XML:

设置 onClick

private void toComments(View rootView) {
    switch (rootView.getId()) {
        case R.id.comments_label_icon:
            Intent toComments = new Intent(getActivity().getApplicationContext(), Discussion_Activity.class);
            toComments.putExtra("POLL_ID", pollID);
            startActivity(toComments);
    }
}

这是我的 XML:

        <ImageView
            android:onClick="toComments"
            android:clickable="true"
            android:id="@+id/comments_label_icon"
            android:layout_marginBottom="3dp"
            android:layout_width="60dp"
            android:layout_height="60dp"
            android:background="@drawable/android_chat"
            android:layout_gravity="bottom|start"
            android:layout_marginLeft="12dp"
            android:layout_marginStart="12dp"
            />

我收到这个错误：

03-01 20:28:46.105 15074-15074/? E/AndroidRuntime: FATAL EXCEPTION: main
                                               Process: com.sourcey.materialloginexample, PID: 15074
                                               java.lang.IllegalStateException: Could not find method toComments(View) in a parent or ancestor Context for android:onClick attribute defined on view class android.support.v7.widget.AppCompatImageView with id 'comments_label_icon'
                                                   at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.resolveMethod(AppCompatViewInflater.java:307)
                                                   at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:266)
                                                   at android.view.View.performClick(View.java:4652)
                                                   at android.view.View$PerformClick.run(View.java:19311)
                                                   at android.os.Handler.handleCallback(Handler.java:733)
                                                   at android.os.Handler.dispatchMessage(Handler.java:95)
                                                   at android.os.Looper.loop(Looper.java:146)
                                                   at android.app.ActivityThread.main(ActivityThread.java:5692)
                                                   at java.lang.reflect.Method.invokeNative(Native Method)
                                                   at java.lang.reflect.Method.invoke(Method.java:515)
                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1291)
                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107)
                                                   at dalvik.system.NativeStart.main(Native Method)

Answer 1

改为评论 public：

public void toComments(View rootView)

它还应该位于显示视图的 Activity 中。

设置 ImageView 单击方法时出现 IllegalStateException

IllegalStateException when Setting ImageView Click Method

android

imageview

click

android-view