Android：将方法关联到智能手机的主页按钮

如何将方法与智能手机的主页按钮相关联？ 我想检查这个botton我的Android应用程序做了一个特定的方法。 我读到要禁用主页按钮有方法：

getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 

但它对我没用。 我怎么解决这个问题？

Answer 1

使用此代码：

 HomeWatcher mHomeWatcher = new HomeWatcher(this); mHomeWatcher.setOnHomePressedListener(new OnHomePressedListener() { @Override public void onHomePressed() { // do something here... } @Override public void onHomeLongPressed() { } }); mHomeWatcher.startWatch(); 

HomeWatcher：

 import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.util.Log; public class HomeWatcher { static final String TAG = "hg"; private Context mContext; private IntentFilter mFilter; private OnHomePressedListener mListener; private InnerRecevier mRecevier; public HomeWatcher(Context context) { mContext = context; mFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS); } public void setOnHomePressedListener(OnHomePressedListener listener) { mListener = listener; mRecevier = new InnerRecevier(); } public void startWatch() { if (mRecevier != null) { mContext.registerReceiver(mRecevier, mFilter); } } public void stopWatch() { if (mRecevier != null) { mContext.unregisterReceiver(mRecevier); } } class InnerRecevier extends BroadcastReceiver { final String SYSTEM_DIALOG_REASON_KEY = "reason"; final String SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS = "globalactions"; final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps"; final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey"; @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) { String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY); if (reason != null) { Log.e(TAG, "action:" + action + ",reason:" + reason); if (mListener != null) { if (reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) { mListener.onHomePressed(); } else if (reason.equals(SYSTEM_DIALOG_REASON_RECENT_APPS)) { mListener.onHomeLongPressed(); } } } } } } } 

OnHomePressedListener：

 public interface OnHomePressedListener { public void onHomePressed(); public void onHomeLongPressed(); } 

Answer 2

尝试重写onKeyDown：

 @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_HOME) // do what you need } 

Answer 3

使用此代码仅适用于HomeWtcher类，这个更好。

 public class HomeWatcher { static final String TAG = "hg"; private Context mContext; private IntentFilter mFilter; private OnHomePressedListener mListener; private InnerReceiver mReceiver; public HomeWatcher(Context context) { mContext = context; mFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS); } public void setOnHomePressedListener(OnHomePressedListener listener) { mListener = listener; mReceiver = new InnerReceiver(); } public void startWatch() { if (mReceiver != null) { mContext.registerReceiver(mReceiver, mFilter); } } public void stopWatch() { if (mReceiver != null) { mContext.unregisterReceiver(mReceiver); } } class InnerReceiver extends BroadcastReceiver { final String SYSTEM_DIALOG_REASON_KEY = "reason"; final String SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS = "globalactions"; final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps"; final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey"; @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) { String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY); if (reason != null) { Log.e(TAG, "action:" + action + ",reason:" + reason); if (mListener != null) { if (reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) { mListener.onHomePressed(); } else if (reason.equals(SYSTEM_DIALOG_REASON_RECENT_APPS)) { mListener.onHomeLongPressed(); } } } } } } }