android.support.v4.app.Fragment#startActivity ( )源码实例Demo

public static void sendScheme(Fragment context, String url, Bundle bundle, boolean clearTop, int flag) {

        Intent intent = new Intent("android.intent.action.VIEW", Uri.parse(url));
        if(bundle != null) {
            intent.putExtras(bundle);
        }

        if(clearTop) {
            intent.addFlags(67108864);
        }

        if(flag != 0) {
            intent.setFlags(flag);
        }

        context.startActivity(intent);
    }
 

public static void viewAssignment(Fragment fragment, Assignment assignment, ArrayList<Attachment> attachments, String mdText) {
    Intent intent = new Intent(fragment.getContext(), ContentActivity.class);
    intent.putExtra(Constants.EXTRA_FRAGMENT, Constants.VALUE_FRAGMENT_ASSIGNMENT_VIEWER);
    intent.putExtra(Constants.EXTRA_MODEL, (Serializable) assignment);
    intent.putParcelableArrayListExtra(Constants.EXTRA_ATTACHMENTS, attachments);
    intent.putExtra(Constants.EXTRA_MARKDOWN_CONTENT, mdText);
    fragment.startActivity(intent);
}
 

private void fromFragment() {
    Fragment fragment = ((Fragment) src);
    if (forResult) {
        fragment.startActivityForResult(intent(fragment.getActivity()), requestCode);
    } else {
        fragment.startActivity(intent(fragment.getActivity()));
    }
}
 

private void startInFragment(Fragment fragment, boolean isForResult, int requestCode) {
    Class clazz = getClassFromRouter();
    if (clazz == null) {
        return;
    }
    if (isForResult) {
        fragment.startActivityForResult(getIntent(fragment.getActivity(), clazz), requestCode);
    } else {
        fragment.startActivity(getIntent(fragment.getActivity(), clazz));
    }
}
 

public boolean navigateToDownloadFile(Fragment fragment, String url) {
    try {
        Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
        if ((intent.resolveActivity(fragment.getActivity().getPackageManager()) != null)) {
            fragment.startActivity(intent);
            return true;
        }
        return false;
    } catch (NullPointerException e) {
        return false;
    }
}
 

public static void launch(Fragment fragment, CommonExtraParam param, int req) {
    Intent it = new Intent(fragment.getActivity(), getTargetActivityClass(param));

    it.putExtra(ICommonFragment.EXTRA_REQ, param);
    if (req == 0) {
        fragment.startActivity(it);
    } else {
        fragment.startActivityForResult(it, req);
    }
}
 

/**
 * Create new {@link Launchable} from l launch source component({@link Fragment}) of other
 * activity.
 *
 * @param fragment requesting result
 * @return New {@link Launchable} instance.
 */
@CheckResult
public Launchable from(@NonNull final Fragment fragment) {
    return new RxActivityResult.Launcher(rxActivityResult) {
        @Override
        protected void startActivity(Intent intent) {
            fragment.startActivity(intent);
        }
    };
}
 

/**
 * open android settings screen for your app.
 */
public static void openSettingsScreen(@NonNull Fragment context) {
    Intent intent = new Intent();
    intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
    Uri uri = Uri.parse("package:" + context.getContext().getPackageName());
    intent.setData(uri);
    context.startActivity(intent);
}
 

/**
 * 给没有文章id的调用
 * @param activity
 * @param fragment
 * @param url
 * @param title
 */
public static void startActivityByFragment(Activity activity, Fragment fragment, String url, String title) {
    Intent intent = new Intent(activity, ArticleActivity.class);
    intent.putExtra(Constant.KEY_ARTICLE_URL, url);
    intent.putExtra(Constant.KEY_ARTICLE_TITLE, title);
    fragment.startActivity(intent);
}