Android Studio实现简单补间动画
本文实例为大家分享了Android Studio实现简单补间动画的具体代码,供大家参考,具体内容如下
1、动画发在res/anim/,创建new/Directory
2、创建动画, 平移,缩放,旋转,改变透明度
//平移 <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <translate android:fromXDelta="0.0" android:fromYDelta="0.0" android:toXDelta="100" android:toYDelta="0.0" android:repeatMode="reverse" android:repeatCount="infinite" android:duration="4000" /> </set> //缩放 <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <scale android:repeatMode="reverse" android:repeatCount="infinite" android:duration="3000" android:fromXScale="1.0" android:fromYScale="1.0" android:toXScale="0.5" android:toYScale="0.5" android:pivotX="50%" android:pivotY="50%"/> </set> //旋转 <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <rotate android:fromDegrees="0" android:toDegrees="360" android:pivotX="50%" android:pivotY="50%" android:repeatMode="reverse" android:repeatCount="infinite" android:duration="1000" /> </set> //改变透明度 <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <alpha android:interpolator="@android:anim/linear_interpolator" android:repeatMode="reverse" android:repeatCount="infinite" android:duration="1000" android:fromAlpha="1.0" android:toAlpha="0.0"/> </set>
3,布局activity_main.xml,点击按钮图片发送变化,图片需要自己下载添加44
<?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="match_parent" android:layout_height="match_parent" android:layout_weight="1" android:orientation="vertical" tools:context=".MainActivity"> <ImageView android:layout_width="300dp" android:layout_height="300dp" android:layout_centerInParent="true" android:layout_gravity="center" android:id="@+id/fk" android:src="@drawable/ff"/> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal"> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="平移" android:textSize="24sp" android:layout_weight="1" android:gravity="center" android:layout_gravity="bottom" android:id="@+id/but"/> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="缩放" android:textSize="24sp" android:layout_gravity="bottom" android:layout_weight="1" android:gravity="center" android:id="@+id/but1"/> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="旋转" android:textSize="24sp" android:gravity="center" android:layout_gravity="bottom" android:layout_weight="1" android:id="@+id/but2"/> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="改变透明度" android:textSize="24sp" android:gravity="center" android:layout_gravity="bottom" android:layout_weight="1" android:id="@+id/but3"/> </LinearLayout> </RelativeLayout>
4、逻辑代码MainActivity
public class MainActivity extends AppCompatActivity implements View.OnClickListener { private ImageView imageView; private Button button; private Button button1; private Button button2; private Button button3; @RequiresApi(api = Build.VERSION_CODES.N) @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //要用控件,定id button=findViewById(R.id.but); button1=findViewById(R.id.but1); button2=findViewById(R.id.but2); button3=findViewById(R.id.but3); imageView=findViewById(R.id.fk); button.setOnClickListener(this); button1.setOnClickListener(this); button2.setOnClickListener(this); button3.setOnClickListener(this); } @Override public void onClick(View view) { switch (view.getId()){ case R.id.but: Animation translation= AnimationUtils.loadAnimation(this,R.anim.translate); imageView.startAnimation(translation); break; case R.id.but1: Animation scale= AnimationUtils.loadAnimation(this,R.anim.scale); imageView.startAnimation(scale); break; case R.id.but2: Animation rotate= AnimationUtils.loadAnimation(this,R.anim.rotate); imageView.startAnimation(rotate); break; case R.id.but3: Animation alpha= AnimationUtils.loadAnimation(this,R.anim.alpha); imageView.startAnimation(alpha); break; } } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我们。
赞 (0)