1、重寫onAttachedToWindow

public void onAttachedToWindow() {
this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
super.onAttachedToWindow();
}

2、 重寫onKeyDown

public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KeyEvent.KEYCODE_HOME:
Log.i(TAG,"KEYCODE_HOME");
return true;
}
return super.onKeyDown(keyCode, event);
}

3 android源碼

因為android系統自己對home鍵在PhoneWindowManager中做了處理，不會返回到上層應用。查看源代碼：

\frameworks\policies\base\phone\com\android\internal\policy\impl\PhoneWindowManager.java 1089行

if (code == KeyEvent.KEYCODE_HOME) {

// If a system window has focus, then it doesn't make sense
// right now to interact with applications.
WindowManager.LayoutParams attrs = win != null ? win.getAttrs() : null;
if (attrs != null) {
final int type = attrs.type;
if (type == WindowManager.LayoutParams.TYPE_KEYGUARD
|| type == WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG) {

// the "app" is keyguard, so give it the key
return false;
}
final int typeCount = WINDOW_TYPES_WHERE_HOME_DOESNT_WORK.length;
for (int i=0; i<typeCount; i++) {
if (type == WINDOW_TYPES_WHERE_HOME_DOESNT_WORK[i]) {
// don't do anything, but also don't pass it to the app
return true;
}
}
}

4 Dialog

如果在Activity彈出dialog，在Activity設置以上2個方法是沒辦法屏蔽的。
其實，原理是一樣的，只是地方不一樣而已。?

final Dialog dialog = new Dialog(this);
dialog.setContentView(R.layout.mydailog);
dialog.show(); //show應在setType之前，否則報錯
dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);

dialog.setOnKeyListener(new android.content.DialogInterface.OnKeyListener(){
@Override
public boolean onKey(DialogInterface dialog, int keyCode,KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_HOME:
Log.i(TAG,"KEYCODE_HOME");
return true;
}
return false;
}
});

參考：

dialog,activity 屏蔽Home鍵詳解

WindowManager.LayoutParams

?

原文：http://www.cnblogs.com/myparamita/archive/2011/10/28/2228054.html

轉載于:https://www.cnblogs.com/hilight/archive/2012/03/06/2382573.html

總結

以上是生活随笔為你收集整理的android 屏蔽home键操作的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。