我刚刚编写了我的第一个Android应用程序，但是我遇到了一个如此狡猾的问题：D。 应用程序非常简单，它只有一个文本框，一个按钮和一个Web视图。 Web视图不可见，单击该按钮时，它将可见，并转到文本框中写入的URL 该应用程序是全屏的。 问题是，当我点击按钮时，它首先没有任何作用，第二次它工作。 因此，我知道有一个焦点问题，我认为，我只是用
为主题android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
所以顶部没有标题栏。我记得当我有标题栏这些行为发生时
1 - 我点击按钮 2 - 出现标题栏 3 - 我点击按钮 4 - 它生效了
我可以说，当我使标题栏不可见时，步骤与顶部相同。
所以我需要帮助解决这个问题，任何想法？
activity_fullscreen.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0099cc"
tools:context=".FullscreenActivity">
<!-- The primary full-screen view. This can be replaced with whatever view
is needed to present your content, e.g. VideoView, SurfaceView,
TextureView, etc. -->
<!-- This FrameLayout insets its children based on system windows using
android:fitsSystemWindows. -->
<FrameLayout android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:background="#ff3191ff">
<LinearLayout android:id="@+id/fullscreen_content_controls"
style="?metaButtonBarStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom|center_horizontal"
android:background="@color/black_overlay"
android:orientation="horizontal"
tools:ignore="UselessParent">
</LinearLayout>
</FrameLayout>
<AutoCompleteTextView android:id="@+id/iptxt"
android:layout_width="272dp" android:layout_height="59dp"
android:nextFocusUp="@id/iptxt" android:nextFocusLeft="@id/iptxt"
android:layout_gravity="center"
android:textColor="#ff26b9ff"
android:textSize="10pt"
android:text="192.168.1.104"
android:textAlignment="center"
android:textStyle="bold"
android:singleLine="true"
android:typeface="normal"
android:inputType="text" />
<Button
android:layout_width="fill_parent"
android:layout_height="59dp"
android:id="@+id/ConnectBTN"
android:layout_gravity="bottom"
android:background="#ff3191ff"
android:text="Connect"
android:textColor="#ffffffff"
android:textSize="12pt"
android:textStyle="bold" />
<WebView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/Mainwbv"
android:visibility="invisible"></WebView>
</FrameLayout>
的AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="ir.proapp.share" >
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
<activity
android:name=".FullscreenActivity"
android:configChanges="orientation|keyboardHidden|screenSize"
android:screenOrientation="portrait"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
fullscreenactivity.java
package ir.proapp.share;
import ir.proapp.share.util.SystemUiHider;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.EditText;
import org.apache.http.protocol.RequestUserAgent;
/**
* An example full-screen activity that shows and hides the system UI (i.e.
* status bar and navigation/system bar) with user interaction.
*
* @see SystemUiHider
*/
public class FullscreenActivity extends Activity {
/**
* Whether or not the system UI should be auto-hidden after
* {@link #AUTO_HIDE_DELAY_MILLIS} milliseconds.
*/
private static final boolean AUTO_HIDE = true;
/**
* If {@link #AUTO_HIDE} is set, the number of milliseconds to wait after
* user interaction before hiding the system UI.
*/
private static final int AUTO_HIDE_DELAY_MILLIS = 3000;
/**
* If set, will toggle the system UI visibility upon interaction. Otherwise,
* will show the system UI visibility upon interaction.
*/
private static final boolean TOGGLE_ON_CLICK = true;
/**
* The flags to pass to {@link SystemUiHider#getInstance}.
*/
private static final int HIDER_FLAGS = SystemUiHider.FLAG_HIDE_NAVIGATION;
/**
* The instance of the {@link SystemUiHider} for this activity.
*/
private SystemUiHider mSystemUiHider;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fullscreen);
final View controlsView = findViewById(R.id.fullscreen_content_controls);
final View contentView = findViewById(R.id.fullscreen_content_controls);
// Set up an instance of SystemUiHider to control the system UI for
// this activity.
mSystemUiHider = SystemUiHider.getInstance(this, contentView, HIDER_FLAGS);
mSystemUiHider.setup();
mSystemUiHider
.setOnVisibilityChangeListener(new SystemUiHider.OnVisibilityChangeListener() {
// Cached values.
int mControlsHeight;
int mShortAnimTime;
@Override
@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
public void onVisibilityChange(boolean visible) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
// If the ViewPropertyAnimator API is available
// (Honeycomb MR2 and later), use it to animate the
// in-layout UI controls at the bottom of the
// screen.
if (mControlsHeight == 0) {
mControlsHeight = controlsView.getHeight();
}
if (mShortAnimTime == 0) {
mShortAnimTime = getResources().getInteger(
android.R.integer.config_shortAnimTime);
}
controlsView.animate()
.translationY(visible ? 0 : mControlsHeight)
.setDuration(mShortAnimTime);
} else {
// If the ViewPropertyAnimator APIs aren't
// available, simply show or hide the in-layout UI
// controls.
controlsView.setVisibility(visible ? View.VISIBLE : View.GONE);
}
if (visible && AUTO_HIDE) {
// Schedule a hide().
delayedHide(AUTO_HIDE_DELAY_MILLIS);
}
}
});
// Set up the user interaction to manually show or hide the system UI.
contentView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (TOGGLE_ON_CLICK) {
mSystemUiHider.toggle();
} else {
mSystemUiHider.show();
}
}
});
Button connectbtn=(Button)findViewById(R.id.ConnectBTN);
connectbtn.setOnClickListener(new Button.OnClickListener()
{
public void onClick(View v)
{
EditText iptetx=(EditText)findViewById(R.id.iptxt);
WebView maniWV=(WebView)findViewById(R.id.Mainwbv);
WebSettings mainSettings=maniWV.getSettings();
mainSettings.setJavaScriptEnabled(true);
mainSettings.setUserAgentString("Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.31
(KHTML, like Gecko) Chrome/26.0.1410.63 Safari/537.31");
maniWV.setVisibility(View.VISIBLE);
maniWV.setWebViewClient(new Ac1());
maniWV.loadUrl("http://"+iptetx.getText()+":9999");
}
});
// Upon interacting with UI controls, delay any scheduled hide()
// operations to prevent the jarring behavior of controls going away
// while interacting with the UI.
/* findViewById(R.id.dummy_button).setOnTouchListener(mDelayHideTouchListener); */
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Trigger the initial hide() shortly after the activity has been
// created, to briefly hint to the user that UI controls
// are available.
delayedHide(100);
}
/**
* Touch listener to use for in-layout UI controls to delay hiding the
* system UI. This is to prevent the jarring behavior of controls going away
* while interacting with activity UI.
*/
View.OnTouchListener mDelayHideTouchListener = new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
if (AUTO_HIDE) {
delayedHide(AUTO_HIDE_DELAY_MILLIS);
}
return false;
}
};
Handler mHideHandler = new Handler();
Runnable mHideRunnable = new Runnable() {
@Override
public void run() {
mSystemUiHider.hide();
}
};
/**
* Schedules a call to hide() in [delay] milliseconds, canceling any
* previously scheduled calls.
*/
private void delayedHide(int delayMillis) {
mHideHandler.removeCallbacks(mHideRunnable);
mHideHandler.postDelayed(mHideRunnable, delayMillis);
}
}