我有一個包含 aWebView和的活動ProgressBar。在網頁加載過程中，進度條出現并逐漸水平填充。View.GONE動畫完成后如何設置進度條的可見性？public class WebviewActivity extends AppCompatActivity { WebView myWebView; ProgressBar pBar; ProgressBar myProgressBar; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.fragment_webview); } @Override protected void onStart() { super.onStart(); setContentView(R.layout.fragment_webview); myProgressBar = findViewById(R.id.mProgressBar); myProgressBar.setMax(100); String url = getIntent().getStringExtra("url"); myWebView = findViewById(R.id.webview01); myWebView.setWebViewClient(new WebViewClient()); WebSettings webSettings = myWebView.getSettings(); webSettings.setJavaScriptEnabled(true); myWebView.loadUrl(url); myWebView.setWebChromeClient(new WebChromeClient() { @Override public void onProgressChanged(WebView view, int newProgress) { super.onProgressChanged(view, newProgress); myProgressBar.setProgress(newProgress); if (newProgress == 100) { AlphaAnimation fadeOut; fadeOut = new AlphaAnimation(1,0); fadeOut.setDuration(500); fadeOut.setFillAfter(true); myProgressBar.startAnimation(fadeOut);// myProgressBar.setVisibility(View.GONE); } else { myProgressBar.setVisibility(View.VISIBLE); } } }); } private class WebViewClient extends android.webkit.WebViewClient { @Override public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request){ String url=request.getUrl().toString(); view.loadUrl(url); return true; } }}
2 回答
MMMHUHU
TA貢獻1834條經驗 獲得超8個贊
使用監聽器：
fadeOut.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {}
@Override
public void onAnimationRepeat(Animation animation) {}
@Override
public void onAnimantionEnd(Animation animation) {
myProgressBar.setVisibility(View.GONE);
}
});
繁華開滿天機
TA貢獻1816條經驗 獲得超4個贊
嘗試為動畫對象設置一個動畫監聽器 (fadeOut)：
myWebView.setWebChromeClient(new WebChromeClient() {
@Override
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
myProgressBar.setProgress(newProgress);
if (newProgress == 100) {
AlphaAnimation fadeOut;
fadeOut = new AlphaAnimation(1, 0);
fadeOut.setDuration(500);
fadeOut.setFillAfter(true);
fadeOut.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
// whatever you want to happen when the fadeOut animation starts
}
@Override
public void onAnimationEnd(Animation animation) {
// whatever you want to happen when the fadeOut animation ends
myProgressBar.setVisibility(View.GONE);
}
@Override
public void onAnimationRepeat(Animation animation) {
// whatever you want to happen when the fadeOut animation repeats itself
}
});
myProgressBar.startAnimation(fadeOut);
} else {
myProgressBar.setVisibility(View.VISIBLE);
}
}
});
通過上面的回調，您可以掛鉤AnimationStart,AnimationEnd和AnimationRepeat。
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