Dialog设置圆角无效

自己写了一个通用的Dialog，但是在drawable中设置的圆角一直不起作用。后来找到一篇博客，解决了问题 https://blog.csdn.net/denglusha737/article/details/63255577

public class CommonDialog extends Dialog{
    private TextView tvTitle;
    private TextView tvContent;
    private TextView tvSure;
    private TextView tvCancel;

    public CommonDialog(@NonNull Context context, String title, String content, String sure, String cancel) {
        super(context);
        setContentView(R.layout.dialog_common);
        getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));  //圆角起作用
        initView();
        conver(title, content, sure, cancel);
    }
    public void initView(){
        tvTitle = findViewById(R.id.dialog_title);
        tvContent = findViewById(R.id.dialog_content);
        tvSure = findViewById(R.id.dialog_sure);
        tvCancel = findViewById(R.id.dialog_cancel);
    }
    public void conver(String title, String content, String sure, String cancel){
        tvTitle.setText(title);
        tvContent.setText(content);
        tvSure.setText(sure);
        tvCancel.setText(cancel);
    }

    public void setItemClickLisenter(final OnItemClickListener listener) {
          tvSure.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View view) {
                  listener.onItemClickListener(tvSure);
              }
          });
          tvCancel.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View view) {
                  listener.onItemClickListener(tvCancel);
              }
          });
    }
    public interface OnItemClickListener{
        public void onItemClickListener(TextView textView);
    }

}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="250dp"
    android:layout_height="188dp"
    android:background="@drawable/bg_dialog">
    <TextView
        android:id="@+id/dialog_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="7dp"
        android:textColor="#000000"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="13dp"
        />
    <View
        android:layout_width="match_parent"
        android:layout_height="1px"
        android:layout_marginTop="10dp" />
    <TextView
        android:id="@+id/dialog_content"
        android:layout_width="match_parent"
        android:layout_height="67dp"
        android:textColor="#000000"
        android:textSize="3dp"
        android:layout_marginTop="18.5dp"
        android:paddingLeft="6dp"
        android:paddingRight="6dp"/>
    <View
        android:layout_width="268dp"
        android:layout_height="1dp"
        android:background="#000000"/>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal">
        <TextView
            android:id="@+id/dialog_cancel"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:textColor="#000000"
            android:textSize="16sp"
            android:gravity="center"/>
        <View
            android:layout_width="1px"
            android:layout_height="match_parent"
            android:background="#000000"/>
        <TextView
            android:id="@+id/dialog_sure"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:textColor="#000000"
            android:textSize="16sp"
            android:gravity="center"/>
    </LinearLayout>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#fff"/>
    <corners android:radius="@dimen/dimen20dp"/>
</shape>

在代码中调用：

CommonDialog commonDialog = new CommonDialog(getContext(), getString(R.string.title_virtuallock),getString(R.string.content_virtuallock),getString(R.string.sure_virtuallock),getString(R.string.cancel_virtuallock));
commonDialog.setItemClickLisenter(new CommonDialog.OnItemClickListener() {
	@Override
    public void onItemClickListener(TextView textView) {
    	if(textView.getId() == R.id.dialog_sure){
   			setPwdIntent = new Intent(getActivity(), SetPwdActivity.class);
        	startActivity(setPwdIntent);
       		virtuallockDialog.dismiss();
        }else if(textView.getId() == R.id.dialog_cancel){
            virtuallockDialog.dismiss();
       }
  }
});
virtuallockDialog.show();

为什么圆角会不起作用呢？

google自己设置了默认的背景，虽然我们设置了view为圆角，但是在挂在已有背景下，我们就是自然看不到，看下源码，google也有说道透明问题。

本文地址：https://blog.csdn.net/aaqian1/article/details/107577076