android開發之美化版的ProgressDialog進度框
阿新 • • 發佈:2019-02-05
大夥也都知道,android版本太多了!哎,據統計截止今年1月初,安卓5.0佔有率不到0.1%。使用者大多仍使用Android Jelly Bean(果凍豆)系統,市場份額為46%,其中4.1佔19.2%,4.2佔20.3%,4.3佔6.5%。排在第二的是安卓4.4系統(39.1%),另外,2.3為7.8%,4.0為6.7%,2.2/2.2.1為0.4%。當然,2.1和2.2兩版本咱們就不糾結了,但2.3以上版本的還有這麼多,而現在的需求就是想在低版本當中,開發出美化的ProgressDialog,如圖1-1
好吧,那咱們就開始動手吧!
第一步:建立一個類
public class ProgressDialog { private Dialog progressDialog; public ProgressDialog(Context context) { progressDialog = new Dialog(context,R.style.progress_dialog); progressDialog.setContentView(R.layout.dialog); progressDialog.setCancelable(true); progressDialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent); TextView msg = (TextView) progressDialog.findViewById(R.id.id_tv_loadingmsg); msg.setText("正在載入中"); } public void showDialog(){ progressDialog.show(); } public void cancelDialog(){ progressDialog.dismiss(); } }
第二步:在/res/values/style.xml當中
<?xml version="1.0" encoding="utf-8"?> <resources> <style name="progress_dialog" parent="@android:style/Theme.Dialog"> <item name="android:windowFrame">@null</item> <item name="android:windowIsFloating">true</item> <item name="android:windowIsTranslucent">true</item> <item name="android:windowNoTitle">true</item> <item name="android:background">@null</item> <item name="android:windowBackground">@null</item> <item name="android:backgroundDimEnabled">false</item> </style> </resources>
第三步:在/res/layout/dialog.xml當中
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/ic_loading_bg" android:gravity="center" android:orientation="vertical" android:padding="16.0dip" > <ProgressBar android:layout_width="30.0dip" android:layout_height="30.0dip" android:indeterminateDrawable="@drawable/progress_drawable_white" /> <TextView android:id="@+id/id_tv_loadingmsg" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginTop="8.0dip" android:textColor="#fff" android:textSize="16.0dip" /> </LinearLayout>
第四步:在/res/drawable/progress_drawable_white.xml當中
<?xml version="1.0" encoding="utf-8"?>
<animation-list android:oneshot="false"
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:duration="83" android:drawable="@drawable/ic_loading_white_01" />
<item android:duration="83" android:drawable="@drawable/ic_loading_white_02" />
<item android:duration="83" android:drawable="@drawable/ic_loading_white_03" />
<item android:duration="83" android:drawable="@drawable/ic_loading_white_04" />
<item android:duration="83" android:drawable="@drawable/ic_loading_white_05" />
<item android:duration="83" android:drawable="@drawable/ic_loading_white_06" />
<item android:duration="83" android:drawable="@drawable/ic_loading_white_07" />
<item android:duration="83" android:drawable="@drawable/ic_loading_white_08" />
<item android:duration="83" android:drawable="@drawable/ic_loading_white_09" />
<item android:duration="83" android:drawable="@drawable/ic_loading_white_10" />
<item android:duration="83" android:drawable="@drawable/ic_loading_white_11" />
<item android:duration="83" android:drawable="@drawable/ic_loading_white_12" />
</animation-list>
第五步:手動呼叫showDialog()或者cancelDialog();