我只想通过父活动调用片段中声明的方法,它会给出错误"尝试调用虚方法' android.content.res.Resources android.content.Context.getResources()'在null对象引用"`请提出建议。
片段方法:
private void displayView(int position) {
// update the main content by replacing fragments
Fragment fragment = null;
switch (position) {
case 0:
fragment = new NoticeBoard();
break;
case 1:
fragment = new Quotes();
if (fragment instanceof Quotes)
((Quotes) fragment).loadSpinnerData();
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.frame_container, fragment).commit();
// update selected item and title, then close the drawer
} else {
// error in creating fragment
Log.e("MainActivity", "Error in creating fragment");
}
}
从父动作调用方法:
var keyValue = ["personal^2", "Small^5", "Medium^7", "Large^9", "ExtraLarge^12"];
tempdata = {};
for(var i=0;i<keyValue.length;i++) {
var key = keyValue[i].split('^')[0];
var value = keyValue[i].split('^')[1];
tempdata[key]= value;
}
$scope.array = tempdata;
我的logcat如下
Logcat错误:java.lang.NullPointerException:尝试调用虚方法&#39; android.content.res.Resources android.content.Context.getResources()&#39;在null对象引用05-25 08:46:59.740:E / AndroidRuntime(6152):在app.redalkemi.edublaze.Quotes.loadSpinnerData(Quotes.java:210)
答案 0 :(得分:0)
尝试稍微改变你的代码
setTimeout(document.getElementByID('button').click(),5000);
父活动中的
public void loadSpinnerData(Context contxt) {
Toast.makeText(contxt, "HELLO", Toast.LENGTH_SHORT).show();
}