[英]How to set button on linearlayout or relativelayout with webview
[英]How to set WebView inside a LinearLayout
我試圖在linearlayout中設置webview。 我剛剛在線性布局中創建了一個xml線性布局文件,進度條和webview。
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ProgressBar
android:id="@+id/progWeb"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/darker_gray"
android:max="100"
android:visibility="invisible" />
<WebView
android:id="@+id/web"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
和java文件只顯示進度條。 此代碼未顯示Webview
public class MainActivity extends Activity {
private WebView web;
private ProgressBar progBar;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE_PROGRESS);
setContentView(R.layout.activity_main);
web = (WebView) findViewById(R.id.web);
progBar = (ProgressBar) findViewById(R.id.progWeb);
progBar.setVisibility(ProgressBar.INVISIBLE);
String url = "http://www.google.com.pk/";
web.getSettings().setJavaScriptEnabled(true);
web.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress) {
System.out.println(progress);
progBar.setProgress(progress);
if (progress == 100) {
progBar.setVisibility(ProgressBar.INVISIBLE);
progBar.setProgress(0);
} else {
progBar.setVisibility(ProgressBar.VISIBLE);
}
}
});
web.loadUrl(url);
}
}
您需要將LinearLayout
的方向設置為vertical
,默認為horizontal
將您的布局更改為
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout"
android:layout_width="fill_parent"
android:orientation="vertical"//==============> Here
android:layout_height="fill_parent" >
<ProgressBar
android:id="@+id/progWeb"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/darker_gray"
android:max="100"
android:visibility="invisible" />
<WebView
android:id="@+id/web"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
默認情況下,LinearLayout將設置為Horizontal
方向。 指定方向類型將解決您的問題
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<WebView
android:id="@+id/web"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
你的活動
public class YourActivityName extends Activity{
private WebView webView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.getWindow().requestFeature(Window.FEATURE_PROGRESS);
setContentView(R.layout.aboutus);
String url = "http://www.google.com.pk/";
getWindow().setFeatureInt(
Window.FEATURE_PROGRESS, Window.PROGRESS_VISIBILITY_ON);
webView=(WebView)findViewById(R.id.webViewLoad);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setSupportZoom(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.loadUrl(url);
webView.setWebViewClient(new WebViewClient() {
ProgressDialog progressDialog = new ProgressDialog(YourActivity.this);
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
Log.e("I am loading Here ","Start");
progressDialog.setTitle("Loading");
progressDialog.setMessage("Please wait....");
progressDialog.show();
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Log.e("I am loading Here ","Override");
view.loadUrl(url);
return true;
}
@Override
public void onPageFinished(WebView view, String url) {
progressDialog.dismiss();
}
});
}
}
更改LinearLayout Orientation android:orientation="vertical"
並更改Progress Bar的寬度android:layout_width="wrap_content"
同時更改Progressbar Gravity。 android:layout_gravity="center"
你最好在RelativeLayout里面使用Webview而不是Linear,它應該解決問題。
<ProgressBar
android:id="@+id/progWeb"
style="@style/progressbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/darker_gray"
android:max="100"
android:visibility="invisible" />
<WebView
android:id="@+id/web"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/progWeb"
android:layout_marginTop="28dp" />
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