[英]Android : Alert dialog background color not changing behind positive button
[英]custom alert dialog background color
我需要一個自定義警報對話框來顯示進度。 當我運行它時,警報對話框背景顏色不會變為透明...下面我將我的代碼放在 xml 布局和警報對話框代碼中
xml 布局:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:background="@android:color/transparent"
android:layout_width="match_parent"
android:gravity="center"
android:layout_height="match_parent">
<androidx.cardview.widget.CardView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:cardElevation="10dp"
app:cardCornerRadius="100dp">
<ProgressBar
android:id="@+id/progressBar"
style="@style/Widget.AppCompat.ProgressBar"
android:layout_width="30dp"
android:layout_margin="5dp"
android:layout_height="30dp" />
</androidx.cardview.widget.CardView>
這是我在片段中的代碼:
View progress = getLayoutInflater().inflate(R.layout.progress_alert, null);
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
builder.setCancelable(false);
builder.setView(progress);
alertDialog = builder.create();
alertDialog.show();
您可以使用以下方法將警報對話框的背景顏色更改為透明:
alertDialog.getWindow().getDecorView().setBackgroundResource(android.R.color.transparent);
看到你可以像這樣為progressBar創建xml文件:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/relativeLayoutProgressBar"
android:visibility="gone"
android:elevation="8dp"
>
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="50dp"
style="?android:attr/progressBarStyle"
android:indeterminate="true"
android:layout_centerInParent="true"
android:theme="@style/RedAccent"
android:elevation="5dp"
/>
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#CCFFFFFF"
android:elevation="4dp"
/>
</RelativeLayout>
並將此布局行包含在 xml 文件中,您希望此進度條如下所示:
<include layout="progressbar" />
並像這樣訪問:
RelativeLayout layout = findViewById(R.id.relativeLayoutProgressBar);
layout.setVisibility(View.GONE);
嘗試這個,
final AlertDialog alertDialog = dialogBuilder.create();
alertDialog.getWindow().setBackgroundDrawable(new
ColorDrawable(Color.TRANSPARENT));
alertDialog.show();
嘗試在 styles.xml 中設置這樣的對話框主題
<style name="dialogTheme" parent="android:Theme.Holo.Dialog">
<item name="android:windowMinWidthMajor">90%</item>
<item name="android:windowMinWidthMinor">90%</item>
</style>
java代碼
Dialog dialog = new Dialog(activity, R.style.dialogTheme);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.your_dialog_layout);
activity.getWindow().setLayout(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
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