开发过程中经常用到加载圈，特别是车机开发由于外设不同很多操作响应的等待时长经常要用到不同的加载圈。
首先，直接上菊花效果图，这是我直接从项目里面截取下来的。
核心代码
import android.app.Dialog;
import android.content.Context;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class CircularLoading {
public static Dialog showLoadDialog(Context context, String msg, boolean isCancelable) {
LayoutInflater inflater = LayoutInflater.from(context);
View v = inflater.inflate(R.layout.circular_loading, null);
RelativeLayout layout = (RelativeLayout) v.findViewById(R.id.dialog_bg);
// main.xml中的ImageView
ImageView loadImage = (ImageView) v.findViewById(R.id.load_iv);
TextView pointTextView = (TextView) v.findViewById(R.id.point_tv);
// 加载动画
Animation hyperspaceJumpAnimation = AnimationUtils.loadAnimation(context, R.anim.rotating_animation);
// 使用ImageView显示动画
loadImage.startAnimation(hyperspaceJumpAnimation);
pointTextView.setText(msg);
Dialog loadingDialog = new Dialog(context, R.style.TransDialogStyle);
loadingDialog.setContentView(layout);
loadingDialog.setCancelable(isCancelable);
loadingDialog.setCanceledOnTouchOutside(false);
Window window = loadingDialog.getWindow();
WindowManager.LayoutParams lp = window.getAttributes();
lp.width = WindowManager.LayoutParams.WRAP_CONTENT;
lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
window.setGravity(Gravity.CENTER);
window.setAttributes(lp);
window.setWindowAnimations(R.style.PopWindowAnimStyle);
loadingDialog.show();
return loadingDialog;
}
public static void closeDialog(Dialog mCircularLoading) {
if (mCircularLoading != null && mCircularLoading.isShowing()) {
mCircularLoading.dismiss();
}
}
}布局文件
circular_loading.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/dialog_bg"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#000000"
android:minHeight="60dp"
android:minWidth="150dp"
android:orientation="horizontal" >
<ImageView
android:id="@+id/load_iv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_marginLeft="20dp"
android:layout_marginStart="20dp"
android:src="@drawable/dialog_loading_img" />
<TextView
android:id="@+id/point_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_marginTop="0dp"
android:layout_toRightOf="@+id/load_iv"
android:ellipsize="middle"
android:singleLine="true"
android:textSize="16sp" />
</RelativeLayout>动画
rotating_animation.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<rotate
android:duration="1000"
android:fromDegrees="0"
android:interpolator="@android:anim/linear_interpolator"
android:pivotX="50%"
android:pivotY="50%"
android:repeatCount="-1"
android:repeatMode="restart"
android:toDegrees="360" />dialog_show.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<alpha android:fromAlpha="0"
android:toAlpha="1.0"/>
</set>dialog_hide.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<alpha android:fromAlpha="1.0"
android:toAlpha="0"/>
</set>Style
</style>
<style name="TransDialogStyle" 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">@android:color/transparent</item>
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:backgroundDimEnabled">true</item>
<item name="android:backgroundDimAmount">0.5</item>
<item name="android:windowFullscreen">true</item>
</style>
</style>
<style name="PopWindowAnimStyle">
<item name="android:windowShowAnimation">@anim/dialog_show</item>
<item name="android:windowHideAnimation">@anim/dialog_hide</item>
</style>使用方法
//显示
mCircularLoading = CircularLoading.showLoadDialog(Dvr_Activity_Main.this, "加载中...", true);
//关闭
CircularLoading.closeDialog(mCircularLoading);以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程网。
