먼저 frameworks/base/packages/SystemUI/res/drawable-[h,m,x]dpi/에
ic_sysbar_home.png와 동일한 크기의
ic_sysbar_plus,png, ic_sysbar_minus.png, ic_sysbar_shutdown.png, ic_sysbar_screenshot.png 이란 이미지를 준비합니다.
frameworks/base/packages/SystemUI/res/layout/navigation_bar.xml 에 recent_apps 다음에 4개의 항목을 추가합니다.
<com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/recent_apps"
android:layout_width="80dp"
android:layout_height="match_parent"
android:src="@drawable/ic_sysbar_recent"
android:layout_weight="0"
systemui:glowBackground="@drawable/ic_sysbar_highlight"
android:contentDescription="@string/accessibility_recent"
/>
<com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/vol_plus"
android:layout_width="80dp"
android:layout_height="match_parent"
android:src="@drawable/ic_sysbar_plus"
android:layout_weight="0"
systemui:glowBackground="@drawable/ic_sysbar_highlight"
android:contentDescription="@string/accessibility_recent"
/>
<com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/vol_minus"
android:layout_width="80dp"
android:layout_height="match_parent"
android:src="@drawable/ic_sysbar_minus"
android:layout_weight="0"
systemui:glowBackground="@drawable/ic_sysbar_highlight"
android:contentDescription="@string/accessibility_recent"
/>
<com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/shutdown"
android:layout_width="80dp"
android:layout_height="match_parent"
android:src="@drawable/ic_sysbar_shutdown"
android:layout_weight="0"
systemui:glowBackground="@drawable/ic_sysbar_highlight"
android:contentDescription="@string/accessibility_recent"
/>
<com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/screenshot"
android:layout_width="80dp"
android:layout_height="match_parent"
android:src="@drawable/ic_sysbar_screenshot"
android:layout_weight="0"
systemui:glowBackground="@drawable/ic_sysbar_highlight"
android:contentDescription="@string/accessibility_recent"
/>
frameworks/base/packages/SystemUI/res/layout-sw600dp/status_bar.xml도 동일하게 수정 합니다.
frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java 에서 volume up/down과 shutdown을 구현합니다.
//volume control
import android.media.AudioManager;
//shutdown
import com.android.internal.app.ShutdownThread;
//screenshot
import android.content.ComponentName;
import android.content.ServiceConnection;
import android.os.Messenger;
ImageView mBackButton;
View mHomeButton;
View mMenuButton;
View mRecentButton;
//버튼 3개 추가
View mVolPlusButton;
View mVolMinusButton;
View mShutdownButton;
View mScreenshotButton;
ViewGroup mFeedbackIconArea; // notification icons, IME icon, compat icon
InputMethodButton mInputMethodSwitchButton;
CompatModeButton mCompatModeButton;
// used to notify status bar for suppressing notification LED
private boolean mPanelSlightlyVisible;
AudioManager mAudioManager;
public Context getContext() { return mContext; }
mMenuButton = mNavigationArea.findViewById(R.id.menu);
mRecentButton = mNavigationArea.findViewById(R.id.recent_apps);
mRecentButton.setOnClickListener(mOnClickListener);
mVolPlusButton = mNavigationArea.findViewById(R.id.vol_plus);
mVolPlusButton.setOnClickListener(mOnClickListener);
mVolMinusButton = mNavigationArea.findViewById(R.id.vol_minus);
mVolMinusButton.setOnClickListener(mOnClickListener);
mShutdownButton = mNavigationArea.findViewById(R.id.shutdown);
mShutdownButton.setOnClickListener(mOnClickListener);
mScreenshotButton = mNavigationArea.findViewById(R.id.screenshot);
mScreenshotButton.setOnClickListener(mOnClickListener);
LayoutTransition lt = new LayoutTransition();
mHomeButton.setVisibility(disableHome ? View.INVISIBLE : View.VISIBLE);
mRecentButton.setVisibility(disableRecent ? View.INVISIBLE : View.VISIBLE);
mVolPlusButton.setVisibility(disableRecent ? View.INVISIBLE : View.VISIBLE);
mVolMinusButton.setVisibility(disableRecent ? View.INVISIBLE : View.VISIBLE);
mShutdownButton.setVisibility(disableRecent ? View.INVISIBLE : View.VISIBLE);
mScreenshotButton.setVisibility(disableRecent ? View.INVISIBLE : View.VISIBLE);
mInputMethodSwitchButton.setScreenLocked(
(visibility & StatusBarManager.DISABLE_SYSTEM_INFO) != 0);
private View.OnClickListener mOnClickListener = new View.OnClickListener() {
public void onClick(View v) {
if (mAudioManager == null)
mAudioManager = (AudioManager)getContext().getSystemService(Context.AUDIO_SERVICE);
if (v == mRecentButton) {
onClickRecentButton();
} else if (v == mInputMethodSwitchButton) {
onClickInputMethodSwitchButton();
} else if (v == mCompatModeButton) {
onClickCompatModeButton();
} else if (v == mVolPlusButton) {
mAudioManager.handleKeyDown(KeyEvent.KEYCODE_VOLUME_DOWN, AudioManager.STREAM_MUSIC);
} else if (v == mVolMinusButton) {
mAudioManager.handleKeyDown(KeyEvent.KEYCODE_VOLUME_UP, AudioManager.STREAM_MUSIC);
} else if (v == mShutdownButton) {
ShutdownThread.shutdown(mContext,true);
}
} else if (v == mScreenshotButton) {
takeScreenshot();
}
}
};
final Object mScreenshotLock = new Object();
ServiceConnection mScreenshotConnection = null;
final Runnable mScreenshotTimeout = new Runnable() {
@Override public void run() {
synchronized (mScreenshotLock) {
if (mScreenshotConnection != null) {
mContext.unbindService(mScreenshotConnection);
mScreenshotConnection = null;
}
}
}
};
// Assume this is called from the Handler thread.
private void takeScreenshot() {
synchronized (mScreenshotLock) {
if (mScreenshotConnection != null) {
return;
}
ComponentName cn = new ComponentName("com.android.systemui",
"com.android.systemui.screenshot.TakeScreenshotService");
Intent intent = new Intent();
intent.setComponent(cn);
ServiceConnection conn = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
synchronized (mScreenshotLock) {
if (mScreenshotConnection != this) {
return;
}
Messenger messenger = new Messenger(service);
Message msg = Message.obtain(null, 1);
final ServiceConnection myConn = this;
Handler h = new Handler(mHandler.getLooper()) {
@Override
public void handleMessage(Message msg) {
synchronized (mScreenshotLock) {
if (mScreenshotConnection == myConn) {
mContext.unbindService(mScreenshotConnection);
mScreenshotConnection = null;
mHandler.removeCallbacks(mScreenshotTimeout);
}
}
}
};
msg.replyTo = new Messenger(h);
msg.arg1 = msg.arg2 = 0;
//if (mStatusBar != null && mStatusBar.isVisibleLw())
msg.arg1 = 1;
//if (mNavigationBar != null && mNavigationBar.isVisibleLw())
msg.arg2 = 1;
try {
messenger.send(msg);
} catch (RemoteException e) {
}
}
}
@Override
public void onServiceDisconnected(ComponentName name) {}
};
if (mContext.bindService(intent, conn, Context.BIND_AUTO_CREATE)) {
mScreenshotConnection = conn;
mHandler.postDelayed(mScreenshotTimeout, 10000);
}
}
