[英]Where/how to unregister broadcast receiver in listview adapter?
I'm getting "Activity has leaked IntentReceiver...Are you missing a call to unregisterReceiver()?" 我收到“活动泄漏了IntentReceiver ...您是否缺少对unregisterReceiver()的调用?” at runtime when executing the code below. 在执行以下代码时在运行时。 I guess that I need to call unregisterReceiver for the Broadcast Receiver created in my_custom_adapter, but I don't know where to place the unregisterReceiver statement, and how to reference the receiver. 我想我需要为my_custom_adapter中创建的广播接收器调用unregisterReceiver,但是我不知道在哪里放置unregisterReceiver语句以及如何引用接收器。 Can anyone help? 有人可以帮忙吗?
Main Activity: 主要活动:
CheckBox master_cb = new CheckBox(getApplicationContext());
master_cb.setText("Check All");
//HERE IS THE LIST VIEW WHICH I HAVE CREATED IN MY XML FILE.
ListView lv = (ListView) findViewById(R.id.listView1);
//HERE I AM CREATING CUSTOM ADAPTER OBJECT.
my_custom_adapter adapter = new my_custom_adapter(this, android.R.layout.simple_list_item_1, elements);
lv.addHeaderView(master_cb);
lv.setAdapter(adapter);
master_cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
Intent my_intent = new Intent("master_check_change");
my_intent.putExtra("check_value", isChecked);
sendBroadcast(my_intent);
}
});
my_customer_adapter: my_customer_adapter:
public class my_custom_adapter extends ArrayAdapter<String> {
private Context context = null;
ArrayList<String> elements = null;
private ArrayList<Boolean> itemChecked = null;
public my_custom_adapter(Context context, int type, ArrayList<String> elements)
{
super(context, type, elements);
this.elements = elements;
this.context = context;
itemChecked = new ArrayList<Boolean>();
BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("master_check_change")) {
boolean check_value = intent.getBooleanExtra("check_value", false);
set_checked(check_value);
notifyDataSetChanged();
}
}
};
context.registerReceiver(receiver, new IntentFilter("master_check_change"));
set_checked(false);
}
Move receiver variable: 移动接收者变量:
BroadcastReceiver receiver;
outside of constructor, then add myOnDestroy method to my_custom_adapter: 在构造函数之外,然后将myOnDestroy方法添加到my_custom_adapter中:
public myOnDestroy(){
context.unregisterReceiver(receiver);
}
now, call it inside your activity's onDestroy, ie: 现在,在活动的onDestroy中调用它,即:
((my_custom_adapter)(getListView().getAdapter())).myOnDestroy();
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