[程式] Android - View / Window

• 使用 WindowManager 產生 / 關閉 float view

• WindowManager wManager = getApplicationContext()
                           .getSystemService(Context. WINDOW_ SERVICE);
  LayoutInflater mInflater = LayoutInflater.from(this);
  mFloatView = mInflater.inflate(R.id.xxx, null);
  
  // show view
  mWindowManager.addView(mFloatView, mParams);
  
  // close view
  mWindowManager.removeView(mFloatView);

  REF:
  http://www.embedu.org/Column/Column522.htm
  http://www.eoeandroid.com/thread-211504-1-1.html


• [ E ]
  (Pass compiling / App crashes on run time & get logcat error)
  android.view.InflateException: Binary XML file line #14: Error inflating class <package name>.<class name>[ S ]
  1.
  Check the package/class name in the xml and java file. They should be the same.
  In xml:
  The tag name should be <package name>.<class name>
  In java:
  The package at the 1st line should be "package <package name>;"
  The class name declared in "public class XXX extend ... " should be <class name>
  2.
  There should be constructors for more than one parameters.
  ie. For class "ClassName", there should be the following constructors.
  public ClassName(Context context) {
      super(context);
  }
  public ClassName(Context context, AttributeSet attrs) {
      super(context, attrs);
  }
  public ClassName(Context context, AttributeSet attrs, int defStyle) {
      super(context, attrs, defStyle);
  }
  REF:
  http://blog.csdn.net/huangxiaohu_coder/article/details/8497286
  http://stackoverflow.com/questions/3739661/android-error-inflating-class


• [ E ]
  (Pass compiling / App crashes on run time & get logcat error)
  Unable to add window android.view.ViewRootImpl$W@22075458 -- permission denied for this window type
  [ S ]
  Add <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW">
  in AndroidManifest.xml
  REF:
  http://stackoverflow.com/questions/7569937/unable-to-add-window-android-view-viewrootw44da9bc0-permission-denied-for-t