安卓Api Demo学习 App/Activity/Dialog

<activity android:name=".app.CustomDialogActivity"
android:label="@string/activity_custom_dialog"   //设置dialog的title
android:theme="@style/Theme.CustomDialog">  //让一个Activity变成dialog
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.SAMPLE_CODE" />
</intent-filter>
</activity>

requestWindowFeature(Window.FEATURE_LEFT_ICON);// 设置自定义title，左侧有图标

setContentView(R.layout.dialog_activity);

getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON, android.R.drawable.ic_dialog_alert); //设置图标