프래그먼트에 있는 시작 버튼을 누르면 타이머가 시작되게 만들려고 합니다.
다음은 메인 액티비티입니다.
package com.snailife.myapplication;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.design.widget.BottomNavigationView;
import android.support.v4.app.Fragment;
import android.support.v7.app.AppCompatActivity;
import android.view.MenuItem;
import android.widget.Button;
import java.util.zip.Inflater;
public class MainActivity extends AppCompatActivity {
Fragment first;
private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
= new BottomNavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
Fragment fragment = null;
switch (item.getItemId()) {
case R.id.first_menu:
fragment = new FirstFragment();
break;
case R.id.second_menu:
fragment = new SecondFragment();
break;
case R.id.thrid_menu:
fragment = new ThirdFragment();
break;
}
getSupportFragmentManager().beginTransaction().replace(R.id.framelayout,fragment).commit();
return true;
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navigation);
navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
getSupportFragmentManager().beginTransaction().add(R.id.framelayout,new FirstFragment()).commit();
}
}?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<FrameLayout
android:id="@+id/framelayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@+id/navigation"/>
<android.support.design.widget.BottomNavigationView
android:id="@+id/navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?android:attr/windowBackground"
android:layout_alignParentBottom="true"
app:menu="@menu/navigation" />
</RelativeLayout>firstfragment가 화면에 뜨고, 시작 버튼을 눌렀을때 타이머가 작동되게 만들려고 하는데, 버튼을 findviewbyid를 어디서 어떻게 해야 하나요? 검색해보니
ExampleFragment fragment = (ExampleFragment) getFragmentManager().findFragmentById(R.id.example_fragment); 이런게 있던데, 프래그먼트를 받아서 그 다음에 어떻게 해야하는지 모르겠습니다.
배경색이 왜 검은색으로 나오는지 모르겠네요.. 스승님들 도움이 필요합니다!
