手记

高仿微信摇一摇,动画效果为左右晃动

原文地址;http://blog.csdn.net/catoop/article/details/8051835,原博主实现了摇一摇

在这几天的学习中,添加了状态栏和摇晃完以后的动画,如图

                                               

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思路;

1.getSystemService(SENSOR_SERVICE)得到SensorManager ,有了它你就可以管理传感器了

2.getSystemService(VEBRATOR_SERVICE)得到手机振动的服务

3.initActionBar 设置手机状态栏的返回键

4.重力感应监听

5handler发送消息

6监听到以后 执行动画

 

代码如下

布局文件

[代码]xml代码:

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

<RelativeLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context="com.example.dong.shake.MainActivity">

    <ImageView

        android:id="@+id/iv_shake"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerInParent="true"

        android:src="@mipmap/shake_logo"/>

</RelativeLayout>

activity中的代码

[代码]xml代码:

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public   class MainActivity extends AppCompatActivity {

    @Bind(R.id.iv_shake)

    ImageView   ivShake;

    private   static final String TAG = "TestSensorActivity";

    private   static final int SENSOR_SHAKE = 10;

    private   SensorManager sensorManager;

    private   Vibrator vibrator;

    private   boolean isShaking = false;

    @Override

    protected   void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        ButterKnife.bind(this);

        sensorManager   = (SensorManager) getSystemService(SENSOR_SERVICE);

        vibrator   = (Vibrator) getSystemService(VIBRATOR_SERVICE);

        initActionBar();//可以设置状态栏的按钮和内容(返回键)

    }

    private   void initActionBar() {

        ActionBar   actionBar = getSupportActionBar();

        actionBar.setDisplayHomeAsUpEnabled(true);

        actionBar.setTitle("摇一摇");

    }

    @Override

    protected   void onResume() {

        super.onResume();

        if   (sensorManager != null) {

            //   第一个参数是Listener,第二个参数是所得传感器类型,第三个参数值获取传感器信息的频率

            sensorManager.registerListener(sensorEventListener,   sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),   SensorManager.SENSOR_DELAY_NORMAL);

        }

    }

    @Override

    protected   void onPause() {

        super.onPause();

        if   (sensorManager != null) {

            //   取消监听器

            sensorManager.unregisterListener(sensorEventListener);

        }

    }

    /**

     *   重力感应监听

     */

    private   SensorEventListener sensorEventListener = new SensorEventListener() {

        @Override

        public   void onSensorChanged(SensorEvent event) {

            //   传感器信息改变时执行该方法

            float[]   values = event.values;

            float   x = values[0]; // x轴方向的重力加速度,向右为正

            float   y = values[1]; // y轴方向的重力加速度,向前为正

            float   z = values[2]; // z轴方向的重力加速度,向上为正

            Log.i(TAG,   "x轴方向的重力加速度" + x + ";y轴方向的重力加速度" + y + ";z轴方向的重力加速度" + z);

            //   一般在这三个方向的重力加速度达到40就达到了摇晃手机的状态。

            int   medumValue = 19;// 三星 i9250怎么晃都不会超过20,没办法,只设置19了

            if   (Math.abs(x) > medumValue || Math.abs(y) > medumValue || Math.abs(z)   > medumValue) {

                vibrator.vibrate(200);

                Message   msg = new Message();

                msg.what   = SENSOR_SHAKE;

                handler.sendMessage(msg);

            }

        }

        @Override

        public   void onAccuracyChanged(Sensor sensor, int accuracy) {

        }

    };

    /**

     *   动作执行

     */

    Handler   handler = new Handler() {

        @Override

        public   void handleMessage(Message msg) {

            super.handleMessage(msg);

            switch   (msg.what) {

                case   SENSOR_SHAKE:

                    if   (!isShaking) {

                        startAnim();

                        isShaking   = true;

                    }

                    break;

            }

        }

    };

    //定义摇一摇动画动画

    private   void startAnim() {

        AnimationSet   animup = new AnimationSet(true);

        TranslateAnimation   animation0 = new TranslateAnimation(Animation.RELATIVE_TO_SELF,0f,

                Animation.RELATIVE_TO_SELF,   -0.5f,Animation.RELATIVE_TO_SELF, 0f, Animation.RELATIVE_TO_SELF,0.f);

        animation0.setDuration(300);

        TranslateAnimation   animation1 = new TranslateAnimation(Animation.RELATIVE_TO_SELF,-0.5f,

                Animation.RELATIVE_TO_SELF,   0.5f,Animation.RELATIVE_TO_SELF, 0f, Animation.RELATIVE_TO_SELF,0.f);

        animation1.setDuration(300);

        animation1.setStartOffset(300);

        TranslateAnimation   animation2 = new TranslateAnimation(Animation.RELATIVE_TO_SELF,0.5f,

                Animation.RELATIVE_TO_SELF,   0f,Animation.RELATIVE_TO_SELF, 0f, Animation.RELATIVE_TO_SELF,0.f);

        animation2.setDuration(300);

        animation2.setStartOffset(600);

        animup.addAnimation(animation0);

        animup.addAnimation(animation1);

        animup.addAnimation(animation2);

        animup.setRepeatCount(Animation.RESTART);

        ivShake.startAnimation(animup);

        ivShake.getAnimation().setAnimationListener(new   Animation.AnimationListener() {

            @Override

            public   void onAnimationStart(Animation animation) {

            }

            @Override

            public   void onAnimationEnd(Animation animation) {

                isShaking   = false;

            }

            @Override

            public   void onAnimationRepeat(Animation animation) {

            }

        });

    }

    @Override

    public   boolean onOptionsItemSelected(MenuItem item) {

        switch   (item.getItemId()) {

            case   android.R.id.home:

                //回退

                finish();

                break;

        }

        return   super.onOptionsItemSelected(item);

    }

}

原文链接:http://www.apkbus.com/blog-862846-62509.html

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