Android自定义加载动画Dialog弹窗效果的示例代码

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import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.Gravity;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.TextView;

/**
 * 自定义弹窗
 */
public class CustomDialog extends Dialog {

 TextView tvLoadingTx;
 ImageView ivLoading;

 public CustomDialog(Context context) {
 this(context, R.style.loading_dialog, "玩命加载中...");

 }

 public CustomDialog(Context context, String string) {
 this(context, R.style.loading_dialog, string);
 }

 protected CustomDialog(Context context, int theme, String string) {
 super(context, theme);
 setCanceledOnTouchOutside(true);//点击其他区域时 true 关闭弹窗 false 不关闭弹窗
 setContentView(R.layout.loading_dialog);//加载布局
 tvLoadingTx = findViewById(R.id.tv_loading_tx);
 tvLoadingTx.setText(string);
 ivLoading = findViewById(R.id.iv_loading);
 // 加载动画
 Animation hyperspaceJumpAnimation = AnimationUtils.loadAnimation(
  context, R.anim.loading_animation);
 // 使用ImageView显示动画
 ivLoading.startAnimation(hyperspaceJumpAnimation);

 getWindow().getAttributes().gravity = Gravity.CENTER;//居中显示
 getWindow().getAttributes().dimAmount = 0.5f;//背景透明度 取值范围 0 ~ 1
 }

	//关闭弹窗
 @Override
 public void dismiss() {
 super.dismiss();
 }