先来看主页面布局
main_activity.xml里面仅仅有一个button(加入点击事件。弹出载入框)
再看MainActivity
package com.example.loadingdialog;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
findViewById(R.id.button1).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
LoadingDialog loadingDialog = new LoadingDialog(MainActivity.this);
loadingDialog.setCancelable(false);
loadingDialog.show();
}
});
}
}
看载入框的布局文件
activity_custom_loding_dialog_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center" >
<LinearLayout
android:layout_width="220dp"
android:layout_height="220dp"
android:layout_gravity="center"
android:background="@drawable/dialog_bocop_loaing_bg"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="2"
android:gravity="center" >
<ImageView
android:id="@+id/iv_route"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:background="@drawable/dialog_bocop_loading_rotate_anim_img" />
</RelativeLayout>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_weight="1"
android:gravity="center_horizontal" >
<TextView
android:id="@+id/tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="@+id/tv_point"
android:ellipsize="marquee"
android:gravity="center"
android:singleLine="true"
android:text="正在载入"
android:textColor="#6F6868"
android:textSize="20sp" />
<TextView
android:id="@+id/tv_point"
android:layout_width="20dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:text="..."
android:textColor="#6F6868"
android:textSize="20sp" />
</RelativeLayout>
</LinearLayout>
</LinearLayout>
LoadingDialog（里面有具体的凝视）
package com.example.loadingdialog;
import android.app.Dialog;
import android.content.Context;
import android.os.Handler;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
import android.widget.ImageView;
import android.widget.TextView;
public class LoadingDialog extends Dialog {
private static final int CHANGE_TITLE_WHAT = 1;
private static final int CHNAGE_TITLE_DELAYMILLIS = 300;
private static final int MAX_SUFFIX_NUMBER = 3;
private static final char SUFFIX = '.';
private ImageView iv_route;
private TextView tv;
private TextView tv_point;
private RotateAnimation mAnim;
private boolean cancelable = true;
/**
* 定义一个handler,载入就发送一个即时消息，让原点+1,继而在每隔300毫秒发送一个延迟消息，来添加+1
*/
private Handler handler = new Handler(){
//正在载入的原点数量
private int num = 0;
public void handleMessage(android.os.Message msg) {
if (msg.what == CHANGE_TITLE_WHAT) {
StringBuilder builder = new StringBuilder();
if (num >= MAX_SUFFIX_NUMBER) {
num = 0;
}
num ++;
for (int i = 0;i < num;i++) {
builder.append(SUFFIX);
}
tv_point.setText(builder.toString());
if (isShowing()) {
handler.sendEmptyMessageDelayed(CHANGE_TITLE_WHAT, CHNAGE_TITLE_DELAYMILLIS);
} else {
num = 0;
}
}
};
};
public LoadingDialog(Context context) {
super(context, R.style.Dialog_bocop);
init();
}
private void init() {
View contentView = View.inflate(getContext(), R.layout.activity_custom_loding_dialog_layout, null);
setContentView(contentView);
contentView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (cancelable) {
dismiss();
}
}
});
iv_route = (ImageView) findViewById(R.id.iv_route);
tv = (TextView) findViewById(R.id.tv);
tv_point = (TextView) findViewById(R.id.tv_point);
/**动画初始化*/
initAnim();
//背景暗色
getWindow().setWindowAnimations(R.anim.alpha_in);
}
private void initAnim() {
mAnim = new RotateAnimation(360, 0,Animation.RESTART, 0.5f, Animation.RESTART,0.5f);
mAnim.setDuration(2000);
// 设置动画反复次数
mAnim.setRepeatCount(Animation.INFINITE);
//动画反复的模式--运行完第一次动画之后。回到动画開始然后运行第二次动画
mAnim.setRepeatMode(Animation.RESTART);
mAnim.setStartTime(Animation.START_ON_FIRST_FRAME);
}
@Override
public void show() {
iv_route.startAnimation(mAnim);
handler.sendEmptyMessage(CHANGE_TITLE_WHAT);
super.show();
}
@Override
public void dismiss() {
mAnim.cancel();
super.dismiss();
}
@Override
public void setCancelable(boolean flag) {
cancelable = flag;
super.setCancelable(flag);
}
}
再看super(context, R.style.Dialog_bocop);
背景色，无标题属性
<style name="Dialog_bocop">
<item name="android:windowBackground">@color/bocop_dialog_bg</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item>
</style>
在color.xml文件里
<?xml version="1.0" encoding="utf-8"?
> <resources> <color name="bocop_dialog_bg">#77000000</color> </resources> <!-- window背景色 -->
接下来看这个getWindow().setWindowAnimations(R.anim.alpha_in);
alpha_in.xml（载入框之外是暗色）
<?xml version="1.0" encoding="utf-8"?> <alpha xmlns:android="http://schemas.android.com/apk/res/android" android:duration="1000" android:fromAlpha="1.0" android:toAlpha="0.0" > </alpha>
本文转自mfrbuaa博客园博客，原文链接：http://www.cnblogs.com/mfrbuaa/p/5050150.html，如需转载请自行联系原作者
