实现 alert dialog 样式的 activity. Implement a dialog theme activity. #tags: android-activity

dialog_theme_activity.xml

  <activity android:name=".DialogThemeActivity"
      android:theme="@style/AppTheme.DialogActivity"
      android:excludeFromRecents="true"/>
      <!-- 必须从「最近使用的Apps列表」中移除. Excluded from the list of recently used applications -->


    <!-- v14/styles.xml -->
    <style name="AppTheme.DialogActivity" parent="@android:style/Theme.Holo.Light.Dialog"/>
    
    
    <!-- v21/styles.xml -->
    <style name="AppTheme.DialogActivity" parent="@style/Theme.AppCompat.Light.Dialog.Alert">
        <item name="android:alertDialogTheme">@style/CustomAlertDialogStyle</item>
    </style>
    
    <style name="CustomAlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
        <!-- 标题、正文的文字颜色 -->
        <item name="android:textColorPrimary">@android:color/holo_blue_light</item>
        <!-- window background color -->
        <item name="android:windowBackground">@android:color/holo_purple</item>
        <!-- SingleChoiceDialog icon color -->
        <item name="colorAccent">@android:color/holo_green_light</item>
        <!-- button & checkbox color -->
        <item name="android:colorAccent">@android:color/holo_red_light</item>
    </style>
 

DialogThemeActivity.java

import android.app.AlertDialog;

// Refer to: http://stackoverflow.com/questions/1979369/android-activity-as-a-dialog
public class DialogThemeActivity extends Activity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        new AlertDialog.Builder(this)
                .setTitle("title")
                .setIcon(R.drawable.ic_)
                .setMessage("message")
                .setCancelable(false)
                .setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        finish();
                    }
                })
                .show();
    }
}