目前我需要创建一个壁纸应用程序。我需要在进入主屏幕之前启动闪屏。我的主屏幕是使用slidingmenu参考开发的。但是，在启动启动画面后，我有以下错误：请提供建议和帮助。谢谢!!
运行启动画面后启动片段活动后出错
E/StrictMode: A resource was acquired at attached stack trace but never released. See java.io.Closeable for information on avoiding resource leaks.
java.lang.Throwable: Explicit termination method 'end' not called
at dalvik.system.CloseGuard.open(CloseGuard.java:184)
at java.util.zip.Inflater.<init>(Inflater.java:82)
at com.android.okio.GzipSource.<init>(GzipSource.java:57)
启动画面活动
public class SplashScreen extends SherlockActivity {
// Splash screen timer
private static int SPLASH_TIME_OUT = 2000;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
new Handler().postDelayed(new Runnable() {
/*
* Showing splash screen with a timer. This will be useful when you
* want to show case your app logo / company
*/
@Override
public void run() {
// This method will be executed once the timer is over
// Start your app main activity
Intent i = new Intent(SplashScreen.this, FragmentChangeActivity.class);
startActivity(i);
// close this activity
finish();
}
}, SPLASH_TIME_OUT);
}
}
片段活动
public class FragmentChangeActivity extends MainActivity {
private Fragment mContent;
public FragmentChangeActivity() {
super(R.string.changing_fragments);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// set the Above View
if (savedInstanceState != null)
mContent = getSupportFragmentManager().getFragment(savedInstanceState, "mContent");
if (mContent == null)
mContent = new ColorFragment(R.color.red);
// set the Above View
setContentView(R.layout.content_frame);
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.content_frame, mContent)
.commit();
// set the Behind View
setBehindContentView(R.layout.menu_frame);
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.menu_frame, new ColorMenuFragment())
.commit();
// customize the SlidingMenu
getSlidingMenu().setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
getSupportFragmentManager().putFragment(outState, "mContent", mContent);
}
public void switchContent(Fragment fragment) {
mContent = fragment;
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.content_frame, fragment)
.commit();
getSlidingMenu().showContent();
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.share:
new AlertDialog.Builder(this)
.setTitle(R.string.share)
.setMessage(Html.fromHtml(getString(R.string.apache_license)))
.show();
break;
case R.id.info:
new AlertDialog.Builder(this)
.setTitle(R.string.info)
.setMessage(Html.fromHtml(getString(R.string.about_msg)))
.show();
break;
}
return super.onOptionsItemSelected(item);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getSupportMenuInflater().inflate(R.menu.example_list, menu);
return true;
}
}
答案 0 :(得分：0)
删除
public MainActivity(int titleRes) {
mTitleRes = titleRes;
}
使用no-arg构造函数实例化活动类，并且您的活动没有它。声明显式构造函数可防止生成隐式no-arg构造函数。
要将参数传递给活动，请将附加内容Bundle与Intent一起使用。 Start an Activity with a parameter
答案 1 :(得分：0)
我现在可以显示启动画面。这是代码：
public class PictureFragment extends SherlockFragment {
// Splash screen timer
private static int SPLASH_TIME_OUT = 2000;
@Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_splash, container, false);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Intent i = new Intent(getActivity(), FragmentChangeActivity.class);
startActivity(i);
getActivity().finish();
}
}, SPLASH_TIME_OUT);
return view;
}
以下是显示启动画面图像的代码
public class MapFragment extends Fragment implements OnMapReadyCallback{
SupportMapFragment mSupportMapFragment;
int radius = 20;
double mLatitude;
double mLongitude;
public double getLatitude() {
return mLatitude;
}
public double getLongitude() {
return mLongitude;
}
private GoogleMap maps;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
mSupportMapFragment = SupportMapFragment.newInstance();
android.support.v4.app.FragmentManager sfm = getFragmentManager();
mSupportMapFragment.getMapAsync(this);
if(!mSupportMapFragment.isAdded())
sfm.beginTransaction().add(R.id.map_frag,mSupportMapFragment).commit();
else if(mSupportMapFragment.isAdded())
sfm.beginTransaction().hide(mSupportMapFragment).commit();
else
sfm.beginTransaction().show(mSupportMapFragment).commit();
LocationManager mLocationManager;
LocationListener mLocationListener;
mLocationListener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
if (location != null) {
/*
Updates to our map may need to be taken place here. Need to listen to other devices in the area.
*/
Log.e("Latitude: ", "" + location.getLatitude());
Log.e("Longitude: ", "" + location.getLongitude());
maps.clear(); //Clear the map of any existing markers
mLatitude = location.getLatitude();//Get coordinates stored into local variables
mLongitude = location.getLongitude();
LatLng latLng = new LatLng(mLatitude,mLongitude);//Create a "LatLng" object consisting of these coordinates
MarkerOptions mp1 = new MarkerOptions();//Instantiate a new "MarkerOptions" where we will be able to define a...
//...marker
mp1.position(new LatLng(location.getLatitude(),//Customizing marker...
location.getLongitude()));
mp1.title("You");
maps.addMarker(mp1);//Finally add the marker to the map
maps.moveCamera(CameraUpdateFactory.newLatLng(latLng));//Move camera to markers location using our "latLng" variable
maps.animateCamera(CameraUpdateFactory.zoomTo(20));// Zoom, (between 2.0 - 21.0) the higher, the more zoomed in
}
}
@Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
@Override
public void onProviderEnabled(String s) {
}
@Override
public void onProviderDisabled(String s) {
}
};
mLocationManager = (LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE);
mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,120000,radius,mLocationListener);
return inflater.inflate(R.layout.fragment_map, container, false);
}
@Override
public void onMapReady(GoogleMap map) {
maps = map;
}
}
}