實作效果
功能說明
類似Toast底色的彈出對話框和加載對話框,主要實作彈出和提示消息的功能,對話框可以實作不被取消,主要功能原理利用了安卓逐幀動畫和繼承對話框接口來實作,适用于新手及新學習Android的碼友們,老玩家當然也可以看看,這個還是挺簡單挺實用的,在後面會簡略介紹實作方法及源代碼,同時部落格的最後還提供源代碼和圖檔等資源github下載下傳位址。
這篇文章的逐幀動畫實作就不做詳細介紹,前面的文章我有詳細的介紹: --------------------------------------------------------------------------------------------------------------------
Android實用視圖動畫及工具系列之一:簡單的載入視圖和載入動畫: http://blog.csdn.net/jaikydota163/article/details/52098833
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實作步驟
步驟一:添加逐幀動畫資源和幀布局Drawable,以及對話框背景樣式
顧名思義,逐幀動畫就是一幀一幀的播放,在Android原生元件不主持gif的情況下,我們要實作逐幀動畫隻能使用一張一張圖檔來逐幀播放以達到效果,如下面的幾張圖(其他圖檔資源在源代碼内,需要的自行下載下傳):
将所有幀圖檔導入到Android項目目錄的drawable檔案夾下:
在drawable目錄下建立xml,取名loading_progress_white_rotate.xml,輸入如下代碼(附屬性說明): animation-list:Android動畫清單 ; oneshot:true播放一次,false循環播放; item:每項動畫; android:drawable:圖檔索引; android:duration:每幀持續時間。
<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
android:oneshot="false" >
<item android:duration="100" android:drawable="@drawable/loading_white_01">
</item>
<item android:duration="100" android:drawable="@drawable/loading_white_02">
</item>
<item android:duration="100" android:drawable="@drawable/loading_white_03">
</item>
<item android:duration="100" android:drawable="@drawable/loading_white_04">
</item>
<item android:duration="100" android:drawable="@drawable/loading_white_05">
</item>
<item android:duration="100" android:drawable="@drawable/loading_white_06">
</item>
<item android:duration="100" android:drawable="@drawable/loading_white_07">
</item>
<item android:duration="100" android:drawable="@drawable/loading_white_08">
</item>
<item android:duration="100" android:drawable="@drawable/loading_white_09">
</item>
<item android:duration="100" android:drawable="@drawable/loading_white_10">
</item>
<item android:duration="100" android:drawable="@drawable/loading_white_11">
</item>
<item android:duration="100" android:drawable="@drawable/loading_white_12">
</item>
</animation-list>
建立toast_bgshape.xml檔案:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:angle="90.0"
android:endColor="#99363636"
android:startColor="#99363636"/>
<corners android:radius="5dp"/>
</shape>
步驟二:建立自定義動畫類
建立類ListAniImageView,代碼如下,此類主要繼承自ImageView,實作了基本動畫播放,暫停和停止功能,注意包名改為自己的:
package com.jaiky.test.loadinganimation;
import android.content.Context;
import android.graphics.drawable.AnimationDrawable;
import android.util.AttributeSet;
import android.widget.ImageView;
/**
* Author by Jaiky, Email [email protected], Date on 9/22/2016.
* PS: Not easy to write code, please indicate.
*/
public class ListAniImageView extends ImageView {
private AnimationDrawable animationDrawable;
public ListAniImageView(Context context) {
super(context);
inti();
}
public ListAniImageView(Context context, AttributeSet attrs) {
super(context, attrs);
inti();
}
public ListAniImageView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
inti();
}
public void inti() {
animationDrawable = (AnimationDrawable) getDrawable();
animationDrawable.start();
}
public void startAnimation() {
animationDrawable.start();
}
public void stopAnimation() {
animationDrawable.setVisible(true, true);
animationDrawable.stop();
}
public void pauseAnimation() {
animationDrawable.stop();
}
}
步驟三:添加對話框樣式和Toast對話框布局
在Android項目values檔案下的styles.xml檔案中添加如下代碼(主要用于對話框顯示樣式):
<!-- 無标題無黑幕透明背景對話框樣式 -->
<style name="NoFrameNoDim_Dialog" parent="android:Theme.Dialog">
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:windowNoTitle">true</item>
<item name="android:backgroundDimEnabled">false</item>
</style>
在layout檔案下建立布局檔案dialog_toast.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_gravity="center"
android:background="@drawable/toast_bgshape"
android:gravity="center"
android:orientation="vertical">
<com.jaiky.test.toastdialog.ListAniImageView
android:layout_width="42dp"
android:layout_height="42dp"
android:layout_gravity="center"
android:src="@drawable/loading_progress_white_rotate"
android:visibility="visible"/>
<TextView
android:id="@+id/dialogToast_tvLoadInfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:gravity="center"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:text="正在送出..."
android:textColor="#ffffff"
android:textSize="12sp"
/>
</LinearLayout>
步驟四:建立Toast對話框類
建立類ToastDialog,繼承自Dialog,代碼如下: setMsg(String msg):設定顯示的文本。 setIsAllowClose(String msg):是否允許關閉對話框。
package com.jaiky.test.toastdialog;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.KeyEvent;
import android.widget.TextView;
/**
* Author by Jaiky, Email [email protected], Date on 8/15/2016.
* PS: Not easy to write code, please indicate.
*/
public class ToastDialog extends Dialog {
private TextView tvLoadInfo;
private boolean isAllowClose = true;
public ToastDialog(Context context) {
this(context, R.style.NoFrameNoDim_Dialog);
}
private ToastDialog(Context context, int theme) {
super(context, theme);
init();
}
private void init() {
setContentView(R.layout.dialog_toast);
tvLoadInfo = (TextView) findViewById(R.id.dialogToast_tvLoadInfo);
setCanceledOnTouchOutside(true);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
/**
* 設定加載消息内容
*
* @param msg
*/
public ToastDialog setMsg(String msg) {
tvLoadInfo.setText(msg);
return this;
}
/**
* 是否允許關閉對話框
*
* @param isAllowClose
* @return
*/
public ToastDialog setIsAllowClose(boolean isAllowClose) {
setCanceledOnTouchOutside(isAllowClose);
this.isAllowClose = isAllowClose;
return this;
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (!isAllowClose) {
return true;
} else {
return super.onKeyDown(keyCode, event);
}
}
}
步驟五:Demo測試修改布局和主類
修改activity_main.xml内容如下(注意自定義控件包名):
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/black"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.jaiky.test.toastdialog.MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:id="@+id/btn1"
android:text="彈出加載對話框"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
<Button
android:id="@+id/btn2"
android:text="不允許關閉對話框"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
</RelativeLayout>
修改MainActiivty内容如下(注意包名):
package com.jaiky.test.toastdialog;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
Button btn1, btn2;
ToastDialog mToastDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1 = (Button) findViewById(R.id.btn1);
btn2 = (Button) findViewById(R.id.btn2);
btn1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mToastDialog == null)
mToastDialog = new ToastDialog(MainActivity.this);
mToastDialog.setMsg("正在加載...")
.show();
}
});
btn2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mToastDialog == null)
mToastDialog = new ToastDialog(MainActivity.this);
mToastDialog.setIsAllowClose(false);
}
});
}
}
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擷取源代碼及資源檔案: https://github.com/jaikydota/Android-ToastDialog
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聲明
歡迎轉載,但請保留文章原始出處
作者:Jaiky_傑哥
出處:http://blog.csdn.net/jaikydota163/article/details/52098841