Android: com.android.layoutlib.bridge.android.BridgeContext : java.lang.ClassCastException: java.lang.ClassCastException不能转换为android.app.Activity“
Android: com.android.layoutlib.bridge.android.BridgeContext : java.lang.ClassCastException: java.lang.ClassCastException不能转换为android.app.Activity“
提问于 2017-02-21 11:34:06
这些都是详细的问题：
java.lang.ClassCastException: com.android.layoutlib.bridge.android.BridgeContext cannot be cast to android.app.Activity
at io.jchat.android.view.LoginView.onMeasure_Original(LoginView.java:123);
at io.jchat.android.view.LoginView.onMeasure(LoginView.java) ;我的代码是：
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int height = MeasureSpec.getSize(heightMeasureSpec);
mContext = getContext();
Activity activity = (Activity)mContext;
activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);
int statusBarHeight = rect.top;
activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
int screenHeight = dm.heightPixels;
int diff = (screenHeight - statusBarHeight) - height;
if(mListener != null){
mListener.onSoftKeyboardShown(diff);
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}作为一名新生，我渴望得到你的帮助。谢谢!
回答 2
Stack Overflow用户
回答已采纳
发布于 2017-02-21 15:26:26
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int height = MeasureSpec.getSize(heightMeasureSpec);
int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
int statusBarHeight = 0;
if (resourceId > 0) {
statusBarHeight = getResources().getDimensionPixelSize(resourceId);
}
dm = getResources().getDisplayMetrics();
int screenHeight = dm.heightPixels;
int diff = (screenHeight - statusBarHeight) - height;
if(mListener != null){
mListener.onSoftKeyboardShown(diff);
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}Stack Overflow用户
发布于 2017-02-21 11:46:39
类com.android.layoutlib.bridge.android.BridgeContext不扩展android.app.Activity，这是执行转换所需的条件的。请检查这些类之间的关系。Activity activity = (Activity)mContext;不起作用。
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原文链接：
https://stackoverflow.com/questions/42366172
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