android:layout_marginLeft=“88dp”

android:layout_marginTop=“244dp”

android:text=“Python”

android:textSize=“25sp”

app:layout_constraintStart_toStartOf=“parent”

app:layout_constraintTop_toTopOf=“parent” />

</androidx.constraintlayout.widget.ConstraintLayout>

2、引入图片

---

3、创建amin_pgbar.xml

---

源代码

<?xml version="1.0" encoding="utf-8"?>

<item

android:drawable=“@drawable/m1”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m2”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m3”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m4”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m5”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m6”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m7”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m8”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m9”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m10”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m11”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m12”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m13”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m14”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m15”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m16”

android:duration=“200”

/>

<item

an
droid:drawable=“@drawable/m17”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m18”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m19”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m20”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m21”

android:duration=“200”

/>

<item

android:drawable=“@drawable/m22”

android:duration=“200”

/>

4、MainActivity当中

---

package com.example.application01;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.drawable.AnimationDrawable;

import android.os.Bundle;

import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

ImageView img_pgbar = (ImageView) findViewById(R.id.imageView);

AnimationDrawable ad = (AnimationDrawable) img_pgbar.getDrawable();

ad.start();