目录
背景
dialog 对话框只提供Activity上下文显示环境，但是很多时候需要在后台服务中显示对话框的场景，例如后台收到哪个反馈时，弹出对应的对话框提示用户。
解决方案：
1、添加权限：
<!--services权限-->
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<uses-permission android:name="android.permission.SYSTEM_OVERLAY_WINDOW" />2、添加getApplicationContext()
记得做判断8.0以上系统
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
Objects.requireNonNull(window).setType((WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY));
} else {
Objects.requireNonNull(window).setType((WindowManager.LayoutParams.TYPE_SYSTEM_ALERT));
}
private VoiceDialog boxDialog;
private void showDialog() {
View inflate = LayoutInflater.from(getApplicationContext()).inflate(R.layout.donghua_layout, null, false);
boxDialog = new VoiceDialog(getApplicationContext(), inflate, VoiceDialog.LocationView.BOTTOM);
// boxDialog.setCancelable(false);//是否可以点击DialogView外关闭Dialog
// boxDialog.setCanceledOnTouchOutside(false);//是否可以按返回按钮关闭Dialog
boxDialog.show();
boxDialog.showVoiceLum();
}3、对话框代码
/**
* 语音
* 对话框
*/
public class VoiceDialog extends Dialog {
//Dialog View
private View view;
//Dialog弹出位置
private LocationView locationView = LocationView.BOTTOM;
/**
* @param context 上下文
* @param view Dialog View
*/
public VoiceDialog(Context context, View view) {
super(context, R.style.BoxDialog);
this.view = view;
}
/**
* @param context 上下文
* @param view Dialog View
* @param locationView Dialog
* 弹出位置
*/
public VoiceDialog(Context context, View view, LocationView locationView) {
super(context, R.style.BoxDialog);
this.view = view;
this.locationView = locationView;
waveLineView = view.findViewById(R.id.waveLineView);
tvContView = view.findViewById(R.id.tv_content);
closeDialog = view.findViewById(R.id.close_dialog);
showTxtContent("请说话");
clickListener();
}
@SuppressLint("RtlHardcoded")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (null != view) {
setContentView(view);
setCancelable(true);//点击外部是否可以关闭Dialog
setCanceledOnTouchOutside(true);//返回键是否可以关闭Dialog
Window window = this.getWindow();
assert window != null;
switch (locationView) {
case TOP:
window.setGravity(Gravity.TOP);
break;
case BOTTOM:
window.setGravity(Gravity.BOTTOM);
break;
case CENTER:
window.setGravity(Gravity.CENTER);
break;
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
Objects.requireNonNull(window).setType((WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY));
} else {
Objects.requireNonNull(window).setType((WindowManager.LayoutParams.TYPE_SYSTEM_ALERT));
}
window.setBackgroundDrawableResource(android.R.color.transparent);
WindowManager.LayoutParams params = window.getAttributes();
params.width = WindowManager.LayoutParams.WRAP_CONTENT;
params.height = WindowManager.LayoutParams.WRAP_CONTENT;
params.y = 10;//设置与底部距离
window.setAttributes(params);
}
}
/**
* 语音
* 播放动画
*/
private WaveLineView waveLineView;
private TextView tvContView;
private ImageView closeDialog;
public void showVoiceLum() {
if (waveLineView != null) {
waveLineView.startAnim();
waveLineView.onResume();
}
}
/**
* 语音
* 停止动画
*/
public void stopAminVoice() {
if (waveLineView != null) {
waveLineView.onPause();
waveLineView.clearDraw();
}
}
/**
* 设置
* 内容
*/
public void showTxtContent(String ct) {
if (tvContView != null) {
tvContView.setText(ct);
}
}
/**
* 显示
* 位置
*/
public enum LocationView {
CENTER, TOP, BOTTOM
}
/**
* 事件
* 监听
*/
private void clickListener() {
if (closeDialog != null) {
closeDialog.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
dismiss();
}
});
}
}
}
4、对话框布局代码
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<RelativeLayout
android:id="@+id/parent_layout"
android:layout_width="@dimen/dp_160"
android:layout_height="@dimen/dp_38"
android:background="@drawable/kdvoice_shape">
<ImageView
android:id="@+id/close_dialog"
android:layout_width="@dimen/dp_10"
android:layout_height="@dimen/dp_10"
android:layout_alignRight="@id/tv_content"
android:layout_alignParentRight="true"
android:layout_marginTop="@dimen/dp_4"
android:layout_marginRight="@dimen/dp_8"
android:src="@drawable/closed_icon" />
<TextView
android:id="@+id/tv_content"
android:layout_width="@dimen/dp_140"
android:layout_height="@dimen/dp_20"
android:layout_marginLeft="@dimen/dp_5"
android:ellipsize="end"
android:gravity="center_horizontal"
android:maxEms="26"
android:paddingTop="@dimen/dp_3"
android:singleLine="true"
android:text="请说话"
android:textColor="@color/color666"
android:textSize="@dimen/sp_10" />
<jaygoo.widget.wlv.WaveLineView
android:id="@+id/waveLineView"
android:layout_width="@dimen/dp_160"
android:layout_height="@dimen/dp_18"
android:layout_below="@id/tv_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="@dimen/dp_4"
app:wlvBackgroundColor="@color/white"
app:wlvFineLineWidth="@dimen/dp_0.2"
app:wlvLineColor="@color/app_color_theme_5"
app:wlvMoveSpeed="290"
app:wlvThickLineWidth="@dimen/dp_0.5" />
</RelativeLayout>
</RelativeLayout>5、对话框样式
<style name="BoxDialog" parent="@android:style/Theme.Holo.Dialog"> <!-- 是否有边框 -->
<item name="android:windowFrame">@null</item> <!--是否在悬浮Activity之上 -->
<item name="android:windowIsFloating">true</item> <!-- 标题 -->
<item name="android:windowNoTitle">true</item> <!--阴影 -->
<item name="android:windowIsTranslucent">true</item> <!--背景透明-->
<item name="android:windowBackground">@android:color/transparent</item> <!--可加入动画-->
</style>完毕！！！
注意由于业务场景需要用到的语音播放效果库WaveLineView
implementation 'com.github.Jay-Goo:WaveLineView:v1.0.4'