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我想創建一個屏幕，將有一個3按鈕的片段，並在它下面的文本框架，但我沒有看到任何東西，當我運行應用程序。 我是Android新手，所以我假設我缺少一些基本的東西。 我錯過了什麼？片段不會顯示在活動
編輯：謝謝你的所有答案。問題最終是因爲按鈕的大小不可見。 活動確實加載了片段，而無需調用片段管理器。
哦，學習一門新的框架:)
感謝您的樂趣！
activity_main.xml中
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<fragment
android:id="@+id/buttons"
android:layout_width="match_parent"
android:layout_height="400dp"
class="com.thenoisemargins.eyaldagiavdor.thisdaybefore.ButtonsFragment" />
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="100dp">
<TextView
android:layout_width="48dp"
android:layout_height="45dp"
android:id="@+id/historicalQuoteTextView"
android:layout_gravity="center_vertical"
android:textAlignment="center"
android:textColor="#FFFFFFFF"
android:text="Quote"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</FrameLayout>
buttons_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<at.markushi.ui.CircleButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:text="@string/this_day_before"
android:id="@+id/thisDayBeforeButton"
app:cb_color="#99CC00"
app:cb_pressedRingWidth="8dip" />
<at.markushi.ui.CircleButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:text="@string/choose_date"
android:id="@+id/ChooseDateButton"
app:cb_color="#99CC00"
app:cb_pressedRingWidth="8dip" />
<at.markushi.ui.CircleButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:text="@string/random_date"
android:id="@+id/RandomDateButton"
app:cb_color="#99CC00"
app:cb_pressedRingWidth="8dip" />
</LinearLayout>
MainActivity.java
public class MainActivity extends ActionBarActivity {
private ButtonsFragment mFragment;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
mFragment = new ButtonsFragment();
fragmentTransaction.add(R.id.buttons, mFragment);
fragmentTransaction.commit();
*/
mFragment = (ButtonsFragment) getFragmentManager()
.findFragmentById(R.id.buttons);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
ButtonsFragment.java
public class ButtonsFragment extends Fragment {
private at.markushi.ui.CircleButton mThisDayBeforeButton;
private at.markushi.ui.CircleButton mChooseDateButton;
private at.markushi.ui.CircleButton mRandomDateButton;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.buttons_fragment, container, false);
return rootView;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mThisDayBeforeButton = (at.markushi.ui.CircleButton) getActivity().findViewById(R.id.thisDayBeforeButton);
mChooseDateButton = (at.markushi.ui.CircleButton) getActivity().findViewById(R.id.ChooseDateButton);
mRandomDateButton = (at.markushi.ui.CircleButton) getActivity().findViewById(R.id.RandomDateButton);
}
}上給出部分
嘗試過它，仍然無法正常工作。 – 2015-03-19 17:55:32