我有活动作为对话，所有我喜欢的节目。但是我对它们周围的框架有疑问。就像这里一样。
我的活动：
public class AlarmAlert extends Activity implements Alarms.AlarmSettings {
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
AlarmAlertWakeLock.acquire(this);
/*
* FIXME Intentionally verbose: always log this until we've fully
* debugged the app failing to start up
*/
Log.v("AlarmAlert.onCreate()");
DigitalClock dc = (DigitalClock) findViewById(R.id.digitalClock1);
mKeyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
Intent i = getIntent();
mAlarmId = i.getIntExtra(Alarms.ID, -1);
Alarms.getAlarm(getContentResolver(), this, mAlarmId);
mKlaxon = new AlarmKlaxon();
mKlaxon.postPlay(this, mAlarmId);
/* Set the title from the passed in label */
setTitleFromIntent(i);
/*
* allow next alarm to trigger while this activity is active
*/
Alarms.disableSnoozeAlert(AlarmAlert.this);
Alarms.disableAlert(AlarmAlert.this, mAlarmId);
Alarms.setNextAlert(this);
mKlaxon.setKillerCallback(new AlarmKlaxon.KillerCallback() {
public void onKilled() {
if (Log.LOGV)
Log.v("onKilled()");
updateSilencedText();
/* don't allow snooze */
mSnoozeButton.setEnabled(false);
dismiss();
mState = KILLED;
}
});
updateLayout();
SharedPreferences settings = getSharedPreferences(
AlarmClock.PREFERENCES, 0);
if (settings.getBoolean(AlarmClock.PREF_SHAKE_SNOOZE, true)) {
mShakeListener = new ShakeListener(this);
mShakeListener
.setOnShakeListener(new ShakeListener.OnShakeListener() {
public void onShake() {
snooze();
if (mCaptchaSnooze == 0)
finish();
}
});
}
}
private void setTitleFromIntent(Intent i) {
mLabel = i.getStringExtra(Alarms.LABEL);
if (mLabel == null || mLabel.length() == 0) {
mLabel = getString(R.string.default_label);
}
setTitle(mLabel);
}
private void updateSilencedText() {
TextView silenced = (TextView) findViewById(R.id.silencedText);
silenced.setText(getString(R.string.alarm_alert_alert_silenced,
mDuration / 1000 * 60));
silenced.setVisibility(View.VISIBLE);
}
private void updateLayout() {
setContentView(R.layout.alarm_alert);
我的 alert_alarm.xml（对话框）。
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/root"
android:layout_width="327dp"
android:layout_height="295dp"
android:background="@drawable/alertbg"
android:gravity="center_horizontal"
android:orientation="vertical" >
<TextView
android:id="@+id/silencedText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:paddingBottom="2dp"
android:paddingTop="2dp"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="@color/ltgrey"
android:visibility="gone" />
<RelativeLayout
android:id="@+id/relativeLayout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="230dp"
android:gravity="center_horizontal" >
<Button
android:id="@+id/snooze"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginLeft="25dp"
android:layout_marginTop="20dp"
android:background="@drawable/teesstt"
android:text="@string/snooze_button"
android:textColor="#fff"
android:textSize="25dp"
android:visibility="visible" />
<Button
android:id="@+id/dismiss"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginRight="25dp"
android:layout_marginTop="20dp"
android:background="@drawable/teesstt"
android:text="@string/dismiss_button"
android:textColor="#fff"
android:textSize="25dp"
android:visibility="visible" />
</RelativeLayout>
<TextView
android:id="@+id/tvDD"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/tvDate"
android:layout_alignLeft="@+id/tvDate"
android:text="Medium Text"
android:textSize="20dp"
android:textColor="#a6a6a6" />
<TextView
android:id="@+id/tvDate"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/relativeLayout1"
android:layout_alignParentLeft="true"
android:layout_marginBottom="55dp"
android:layout_marginLeft="30dp"
android:text="Medium Text"
android:textSize="25dp"
android:textColor="#a6a6a6" />
<com.boxclocks.android.alarmclock.dc
android:id="@+id/digitalClock1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:layout_marginTop="58dp"
android:text="DigitalClock"
android:textColor="#a6a6a6"
android:textSize="70dp" />
</RelativeLayout>
怎么去掉边框。