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| 1 | public class ImprovedWebViewFragment extends Fragment {
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| 2 | ||
| 3 | private WebView mWebView; | |
| 4 | private boolean mIsWebViewAvailable; | |
| 5 | private String mUrl = null; | |
| 6 | ||
| 7 | - | public ImprovedWebViewFragment() {
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| 7 | + | |
| 8 | * Creates a new fragment which loads the supplied url as soon as it can | |
| 9 | * @param url the url to load once initialised | |
| 10 | */ | |
| 11 | public ImprovedWebViewFragment(String url) {
| |
| 12 | super(); | |
| 13 | mUrl = url; | |
| 14 | } | |
| 15 | ||
| 16 | /** | |
| 17 | * Called to instantiate the view. Creates and returns the WebView. | |
| 18 | */ | |
| 19 | @Override | |
| 20 | public View onCreateView(LayoutInflater inflater, ViewGroup container, | |
| 21 | Bundle savedInstanceState) {
| |
| 22 | if (mWebView != null) {
| |
| 23 | mWebView.destroy(); | |
| 24 | } | |
| 25 | mWebView = new WebView(getActivity()); | |
| 26 | mWebView.loadUrl(mUrl); | |
| 27 | mIsWebViewAvailable = true; | |
| 28 | return mWebView; | |
| 29 | } | |
| 30 | ||
| 31 | /** | |
| 32 | * Convenience method for loading a url. Will fail if {@link View} is not initialised (but won't throw an {@link Exception})
| |
| 33 | * @param url | |
| 34 | */ | |
| 35 | public void loadUrl(String url) {
| |
| 36 | if (mIsWebViewAvailable) getWebView().loadUrl(mUrl = url); | |
| 37 | else Log.w("ImprovedWebViewFragment", "WebView cannot be found. Check the view and fragment have been loaded.");
| |
| 38 | } | |
| 39 | ||
| 40 | /** | |
| 41 | * Called when the fragment is visible to the user and actively running. Resumes the WebView. | |
| 42 | */ | |
| 43 | @Override | |
| 44 | public void onPause() {
| |
| 45 | super.onPause(); | |
| 46 | mWebView.onPause(); | |
| 47 | } | |
| 48 | ||
| 49 | /** | |
| 50 | * Called when the fragment is no longer resumed. Pauses the WebView. | |
| 51 | */ | |
| 52 | @Override | |
| 53 | public void onResume() {
| |
| 54 | mWebView.onResume(); | |
| 55 | super.onResume(); | |
| 56 | } | |
| 57 | ||
| 58 | /** | |
| 59 | * Called when the WebView has been detached from the fragment. | |
| 60 | * The WebView is no longer available after this time. | |
| 61 | */ | |
| 62 | @Override | |
| 63 | public void onDestroyView() {
| |
| 64 | mIsWebViewAvailable = false; | |
| 65 | super.onDestroyView(); | |
| 66 | } | |
| 67 | ||
| 68 | /** | |
| 69 | * Called when the fragment is no longer in use. Destroys the internal state of the WebView. | |
| 70 | */ | |
| 71 | @Override | |
| 72 | public void onDestroy() {
| |
| 73 | if (mWebView != null) {
| |
| 74 | mWebView.destroy(); | |
| 75 | mWebView = null; | |
| 76 | } | |
| 77 | super.onDestroy(); | |
| 78 | } | |
| 79 | ||
| 80 | /** | |
| 81 | * Gets the WebView. | |
| 82 | */ | |
| 83 | public WebView getWebView() {
| |
| 84 | return mIsWebViewAvailable ? mWebView : null; | |
| 85 | } | |
| 86 | ||
| 87 | } |