这是MainAvctivity里的代码 运行之后APP打不开 马上闪退
package youban;
import java.nio.channels.ScatteringByteChannel;
import java.util.ArrayList;
import java.util.List;
import com.example.youban.R;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
public class MainActivity extends FragmentActivity {
private ViewPager mViewPager;
private List<Fragment> mTabs = new ArrayList<Fragment>();
private String[] mTitles = new String[]
{ "First Fragment !", "Second Fragment !", "Third Fragment !",
"Fourth Fragment !" };
private FragmentPagerAdapter mAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
initView();
initDates();
mViewPager.setAdapter(mAdapter);
}
private void initDates() {
for(String tltle : mTitles)
{
Tabfragment tabfragment = new Tabfragment();
Bundle bundle = new Bundle();
bundle.putString(Tabfragment.TITLE, tltle);
tabfragment.setArguments(bundle);
mTabs.add(tabfragment);
}
mAdapter = new FragmentPagerAdapter(getSupportFragmentManager())
{
@Override
public int getCount()
{
return mTabs.size();
}
@Override
public Fragment getItem(int position)
{
return mTabs.get(position);
}
};
}
private void initView() {
mViewPager = (ViewPager)findViewById(R.id.viewpager);
}
}
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.fragment"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="20" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.fragment.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>