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Apache License
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package com.donnemartin.android.fieldreporter; /*from w w w .java 2 s. c o m*/ import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.widget.FrameLayout; public abstract class SingleFragmentActivity extends FragmentActivity { protected static final String FRAGMENT_TAG = "SingleFragmentActivity.Fragment"; protected abstract Fragment createFragment(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); FrameLayout fl = new FrameLayout(this); fl.setId(R.id.fragmentContainer); setContentView(fl); FragmentManager manager = getSupportFragmentManager(); Fragment fragment = manager.findFragmentById(R.id.fragmentContainer); if (fragment == null) { fragment = createFragment(); manager.beginTransaction() .add(R.id.fragmentContainer, fragment) .commit(); } } }