解決安卓全屏狀態下WebView的輸入框被軟鍵盤擋住的問題

 

解決安卓全屏“FLAG_FULLSCREEN”狀態下“adjustResize”失效，全屏狀態下WebView的輸入框被軟鍵盤擋住的問題

http://blog.csdn.net/l_yinghao/article/details/46008863

 

public class AndroidBug5497Workaround {

    // For more information, see https://code.google.com/p/android/issues/detail?id=5497
    // To use this class, simply invoke assistActivity() on an Activity that already has its content view set.

    public static void assistActivity (Activity activity) {
        new AndroidBug5497Workaround(activity);
    }

    private View mChildOfContent;
    private int usableHeightPrevious;
    private FrameLayout.LayoutParams frameLayoutParams;

    private AndroidBug5497Workaround(Activity activity) {
        FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);
        mChildOfContent = content.getChildAt(0);
        mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            public void onGlobalLayout() {
                possiblyResizeChildOfContent();
            }
        });
        frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent.getLayoutParams();
    }

    private void possiblyResizeChildOfContent() {
        int usableHeightNow = computeUsableHeight();
        if (usableHeightNow != usableHeightPrevious) {
            int usableHeightSansKeyboard = mChildOfContent.getRootView().getHeight();
            int heightDifference = usableHeightSansKeyboard - usableHeightNow;
            if (heightDifference > (usableHeightSansKeyboard/4)) {
                // keyboard probably just became visible
                frameLayoutParams.height = usableHeightSansKeyboard - heightDifference;
            } else {
                // keyboard probably just became hidden
                frameLayoutParams.height = usableHeightSansKeyboard;
            }
            mChildOfContent.requestLayout();
            usableHeightPrevious = usableHeightNow;
        }
    }

    private int computeUsableHeight() {
        Rect r = new Rect();
        mChildOfContent.getWindowVisibleDisplayFrame(r);
        return (r.bottom - r.top);
    }

}

　　在Activity/Fragment的onCreate()/onCreateView()里調用AndroidBug5497Workaround.assistActivity(Activity)；

protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		//去除標題
		this.requestWindowFeature(Window.FEATURE_NO_TITLE);
		getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);//設置全屏
		setContentView(R.layout.indexlayout);
		AndroidBug5497Workaround.assistActivity(this);
		onResume();//設置豎屏
		dm = new DisplayMetrics();
		getWindowManager().getDefaultDisplay().getMetrics(dm);
		
		//歡迎信息
		webView = (WebView)findViewById(R.id.webView);
		handler= new Handler();
		
		//獲取用戶登錄賬戶密碼，跳登錄
		Intent intent = getIntent();
		usercode = intent.getStringExtra("usercode");
		Password = intent.getStringExtra("Password");
		usertype = intent.getStringExtra("usertype");
        webView.loadUrl("http://00000:00/Login_login.do?method=page&usercode="+usercode+"&password="+Password);
	}

　　還有個問題就是彈出鍵盤時候，webview會出現縮放，感覺用戶體驗不好，禁止頁面縮放：

　　　　html界面meta標簽：

　　<metaname="viewport"content="height= [pixel_value| "device-height"] ,width= [pixel_value| "device-width"] ,initial-scale=float_value,//初始縮放minimum-scale=float_value,//最小maximum-scale=float_value,//最大user-scalable= ["yes" | "no"]//是否允許用戶對頁面縮放          "/>

 <meta name="viewport" content="width=device-width, initial-scale=1,user-scalable=no"  />