APIDemo动画合集

/* * Copyright (C) 2009 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package com.example.android.apis.view;// Need the following import to get access to the app resources, since this// class is in a sub-package.import com.example.android.apis.R;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.animation.AnimationUtils;import android.view.animation.Animation;import android.view.animation.TranslateAnimation;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.Spinner;public class Animation3 extends Activity implements AdapterView.OnItemSelectedListener {    private static final String[] INTERPOLATORS = {            "Accelerate", "Decelerate", "Accelerate/Decelerate",            "Anticipate", "Overshoot", "Anticipate/Overshoot",            "Bounce"    };    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.animation_3);        Spinner s = (Spinner) findViewById(R.id.spinner);        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,                android.R.layout.simple_spinner_item, INTERPOLATORS);        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);        s.setAdapter(adapter);        s.setOnItemSelectedListener(this);    }    public void onItemSelected(AdapterView<?> parent, View v, int position, long id) {        final View target = findViewById(R.id.target);        final View targetParent = (View) target.getParent();        Animation a = new TranslateAnimation(0.0f,                targetParent.getWidth() - target.getWidth() - targetParent.getPaddingLeft() -                targetParent.getPaddingRight(), 0.0f, 0.0f);        a.setDuration(1000);        a.setStartOffset(300);        a.setRepeatMode(Animation.RESTART);        a.setRepeatCount(Animation.INFINITE);        switch (position) {            case 0:                a.setInterpolator(AnimationUtils.loadInterpolator(this,                        android.R.anim.accelerate_interpolator));                break;            case 1:                a.setInterpolator(AnimationUtils.loadInterpolator(this,                        android.R.anim.decelerate_interpolator));                break;            case 2:                a.setInterpolator(AnimationUtils.loadInterpolator(this,                        android.R.anim.accelerate_decelerate_interpolator));                break;            case 3:                a.setInterpolator(AnimationUtils.loadInterpolator(this,                        android.R.anim.anticipate_interpolator));                break;            case 4:                a.setInterpolator(AnimationUtils.loadInterpolator(this,                        android.R.anim.overshoot_interpolator));                break;            case 5:                a.setInterpolator(AnimationUtils.loadInterpolator(this,                        android.R.anim.anticipate_overshoot_interpolator));                break;            case 6:                a.setInterpolator(AnimationUtils.loadInterpolator(this,                        android.R.anim.bounce_interpolator));                break;        }        target.startAnimation(a);    }    public void onNothingSelected(AdapterView<?> parent) {    }}
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