首先看下要实现的功能：
需求：当加载数据的时候要出现加载数据中...和上部圆要做动画效果
1.写一个类继承Dialog；在Dialog做处理：
package progressdialog.hanwei.com.dialog;
import android.app.Dialog;
import android.content.Context;
import android.graphics.drawable.AnimationDrawable;
import android.view.Gravity;
import android.widget.ImageView;
import android.widget.TextView;
import progressdialog.hanwei.com.R;
/**
* Created by 陈苗辉 on 2016/12/14.
*/
public class ProgressDialog extends Dialog{
private Context context;
public ProgressDialog(Context context) {
super(context);
this.context = context;
}
public ProgressDialog(Context context, int themeResId) {
super(context, themeResId);
}
protected ProgressDialog(Context context, boolean cancelable, OnCancelListener cancelListener) {
super(context, cancelable, cancelListener);
}
private static ProgressDialog progressDialog;
//创建dialog的样式
public static ProgressDialog createDialog(Context context){
progressDialog = new ProgressDialog(context, R.style.ProgressDialogStyle);
progressDialog.setCanceledOnTouchOutside(false);
progressDialog.setContentView(R.layout.progressdialog);
progressDialog.getWindow().getAttributes().gravity = Gravity.CENTER;
return progressDialog ;
}
@Override
public void onWindowFocusChanged(boolean hasFocus) {
if (progressDialog == null) {
return;
}
//添加控件 执行帧动画
ImageView imageView = (ImageView) progressDialog.findViewById(R.id.loadingImageView);
AnimationDrawable animationDrawable = (AnimationDrawable) imageView.getBackground();
animationDrawable.start();
}
public ProgressDialog setTitle(String title) {
return progressDialog;
}
public ProgressDialog setMessage(String strMessage){
TextView tvMessage = (TextView)progressDialog.findViewById(R.id.id_tv_loadingmsg);
if (tvMessage != null){
tvMessage.setText(strMessage);
}
return progressDialog;
}
}2.主要在自定义的Dialog中创建样式：
public static ProgressDialog createDialog(Context context){
progressDialog = new ProgressDialog(context, R.style.ProgressDialogStyle);
progressDialog.setCanceledOnTouchOutside(false);
progressDialog.setContentView(R.layout.progressdialog);
progressDialog.getWindow().getAttributes().gravity = Gravity.CENTER;
return progressDialog ;
}<style name="ProgressDialogStyle" parent="@style/ProgressDialog"> <item name="android:windowBackground">@android:color/transparent</item> <item name="android:windowNoTitle">true</item> </style>
<style name="ProgressDialog" parent="@android:style/Theme.Dialog"> <item name="android:windowFrame">@null</item> <item name="android:windowIsFloating">true</item> <item name="android:windowContentOverlay">@null</item> <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item> <item name="android:windowSoftInputMode">stateUnspecified|adjustPan</item> </style>
3.要加载的样式布局：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <ImageView android:id="@+id/loadingImageView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/progress_round"/> <TextView android:id="@+id/id_tv_loadingmsg" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:textSize="20dp"/> </LinearLayout>
4.红色部分添加的动画图片（特别提醒一下animation-list在Studio下的anim是找不到的要放在drawable下）：
<animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false"> <item android:drawable="@drawable/progress_1" android:duration="200"/> <item android:drawable="@drawable/progress_2" android:duration="200"/> <item android:drawable="@drawable/progress_3" android:duration="200"/> <item android:drawable="@drawable/progress_4" android:duration="200"/> <item android:drawable="@drawable/progress_5" android:duration="200"/> <item android:drawable="@drawable/progress_6" android:duration="200"/> <item android:drawable="@drawable/progress_7" android:duration="200"/> <item android:drawable="@drawable/progress_8" android:duration="200"/> </animation-list>
5.在自定义的Dialog中执行onWindowFocusChanged方法来执行动画效果
6.在需要的地方添加ProgressDialog即可
ProgressDialog dialog = ProgressDialog.createDialog(this);
dialog.setMessage("数据加载中...");
dialog.show();
随时随地看视频
