少年意气强不羁，虎胁插翼白日飞。这篇文章主要讲述Android初学第79天相关的知识，希望能为你提供帮助。
android初学第79天【Android初学第79天】16_CameraIntent
代码
Criminalintent
SingleFragmentActivity.java
package com.bignerdranch.android.criminalintent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v7.app.AppCompatActivity;
public abstract class SingleFragmentActivity extends AppCompatActivity {protected abstract Fragment createFragment();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fragment);
FragmentManager fm = getSupportFragmentManager();
Fragment fragment = fm.findFragmentById(R.id.fragment_container);
if (fragment == null) {
fragment = createFragment();
fm.beginTransaction()
.add(R.id.fragment_container, fragment)
.commit();
}
}
}推荐阅读
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