我期待在提供的Android開發人員網站(http://developer.android.com/training/basics/activity-lifecycle/index.html)在生命週期的演示。當單擊暫停按鈕時會出現一個對話框,但我無法弄清楚代碼中將對話活動置於對話框中的哪個位置,而不是正常的活動。我試圖在自己的應用程序中實現這一點,以便我可以嘗試暫停,但我不明白對話框的來源。用於使活動顯示爲對話框的代碼在哪裏?Android生命週期演示如何創建對話框?
下面是UI
<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright (C) 2012 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="225dp"
android:layout_height="120dp"
android:background="@color/dark_yellow"
android:padding="12dip"
>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/dialog_text"
android:gravity="center_horizontal"
android:textSize="@dimen/font_medium"
android:textColor="@color/light_yellow"
android:paddingBottom="12dip"
/>
<Button
android:id="@+id/btn_finish_dialog"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="@string/btn_finish_dialog_label"
android:layout_gravity="center_horizontal"
android:onClick="finishDialog"
/>
</LinearLayout>
此處的代碼用於與UI
/* *版權(C)2012的Android開源項目 * 相關聯的類的代碼*根據Apache許可證2.0版(「許可證」)獲得許可; *除遵守許可證外,您不得使用此文件。 *您可以在獲得許可證的副本 * * http://www.apache.org/licenses/LICENSE-2.0 * *除非適用法律要求或書面同意,根據許可證分發的軟件 *分佈在「原樣」的基礎, *沒有任何形式的保證或條件,無論是明示還是暗示。 *請參閱許可證以瞭解許可證下的特定語言管理權限和 *限制。 */
package com.example.android.lifecycle;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
public class DialogActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_dialog);
}
/**
* Callback method defined by the View
* @param v
*/
public void finishDialog(View v) {
DialogActivity.this.finish();
}
}
我不明白你指的是你能張貼的鏈接代碼到指定的主題談論? – Rarw