Fragment Webview 返回键监听

之前因为Fragment，不能监听返回键，所以把Fragment返回监听，放在了FragmentActivity上。

FragmentActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
if (fragment instanceof RechargeSuccessFragment
|| fragment instanceof HuifuWithdrawalSuccessFragment) {
finish();
} else {
popBackStack();
}
return true;
}
return super.onKeyDown(keyCode, event);
}

后来又加上要监听webview返回，对之前代码不太满意。后修改如下：

Fragment.java

mWebView.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
if (mWebView != null && mWebView.canGoBack()) {
mWebView.goBack();
} else {
mActivity.popBackStack();
}
return true;
}
return  false;
}
});

搞定！