属性动画 小球从左上角到右下角运动

activity.xml中写

<com.bwie.test.yuemoni.ViewClass    android:id="@+id/Bull"    android:layout_width="wrap_content"    android:layout_height="wrap_content" />

创建一个类ViewClass  继承View

import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.View;public class ViewClass extends View {    public ViewClass(Context context) {        super(context);    }    public ViewClass(Context context, AttributeSet attrs) {        super(context, attrs);    }    public ViewClass(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);    }    public ViewClass(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {        super(context, attrs, defStyleAttr, defStyleRes);    }    // 测量：    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);    }    // 绘制：    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        // 圆        Paint pa1 = new Paint();        pa1.setColor(Color.BLUE);        pa1.setAntiAlias(true);        canvas.drawCircle(50,50,50,pa1);    }    // 定位：    @Override    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {        super.onLayout(changed, left, top, right, bottom);    }    // 监听    @Override    public boolean onTouchEvent(MotionEvent event) {        return super.onTouchEvent(event);    }}

在activity.java中写

import android.animation.Animator;import android.animation.AnimatorSet;import android.animation.ObjectAnimator;import android.animation.TypeEvaluator;import android.animation.ValueAnimator;import android.content.Intent;import android.graphics.PointF;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.animation.LinearInterpolator;import android.widget.ImageView;public class MainActivity extends AppCompatActivity {    ViewClass MyView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_hello);       MyView = (ViewClass) findViewById(R.id.Bull);       ObjectAnimator move = ObjectAnimator.ofFloat(MyView, "translationY", 0, 1100f);       ObjectAnimator scale2 = ObjectAnimator.ofFloat(MyView, "translationX",0,600f);       AnimatorSet animset = new AnimatorSet();       animset.play(move).with(scale2);       animset.setDuration(3000);       animset.start();       // 动画监听        animset.addListener(new Animator.AnimatorListener() {            @Override            public void onAnimationStart(Animator animator) {            }            @Override            public void onAnimationEnd(Animator animator) {                Intent intent = new Intent(HelloActivity.this, MainActivity.class);                startActivity(intent);            }            @Override            public void onAnimationCancel(Animator animator) {            }            @Override            public void onAnimationRepeat(Animator animator) {            }        });    }}