21_Android中常见对话框，光传感器，通过重力感应器编写出指南针应用，帧动画，通过Jav代码的方式编写补间动画，通过XML的方式编写补间动画

package com.itheima.dialog;

import android.app.Activity;

import android.app.AlertDialog;

import android.app.ProgressDialog;

import android.app.AlertDialog.Builder;

import android.content.DialogInterface;

import android.content.DialogInterface.OnClickListener;

import android.content.DialogInterface.OnMultiChoiceClickListener;

import android.os.Bundle;

import android.view.View;

import android.widget.Toast;

public class MainActivity extends Activity {

    protected void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       setContentView(R.layout.activity_main);

    }

    public void click1(View view) {

       // 对话框的创建器

       AlertDialog.Builder builder = new Builder(this);

       builder.setTitle("我是对话框");

       builder.setMessage("对话框显示的内容");

       // 设置点击确定按钮后制定的动作

       builder.setPositiveButton("确定", new OnClickListener() {

           @Override

           public void onClick(DialogInterface dialog, int which) {

              Toast.makeText(getApplicationContext(), "确定被点击了", 0).show();

           }

       });

        builder.setNegativeButton("取消", new OnClickListener() {// 设置取消按钮

                  @Override

                  public void onClick(DialogInterface dialog, int which) {

                     // 什么都不写默认实现的就是关闭掉对话框

                     Toast.makeText(getApplicationContext(), "点击了取消按钮",

                            Toast.LENGTH_LONG).show();

                  }

              });

       builder.setCancelable(false);

       builder.create().show();

    }

    /**

     * 单选对话框

     *

     * @param view

     */

    public void click2(View view) {

       // 对话框的创建器

       AlertDialog.Builder builder = new Builder(this);

       builder.setTitle("请选择您的性别");

       final String[] items = { "男", "女", "未知" };

        //这里的1表示默认选中的是哪个，0：表示选中的是第一个

       builder.setSingleChoiceItems(items, 1, new OnClickListener() {

           @Override

           public void onClick(DialogInterface dialog, int which) {

              Toast.makeText(getApplicationContext(), "您的性别：" + items[which],

                     0).show();

              dialog.dismiss();

           }

       });

       builder.create().show();

    }

    /**

     * 多选对话框

     * @param view

     */

    public void click3(View view) {

       // 对话框的创建器

       AlertDialog.Builder builder = new Builder(this);

       builder.setTitle("请选择你最爱吃的水果");

       final String[] items = { "苹果", "梨", "菠萝", "香蕉", "黄瓜" };

       final boolean[] result = new boolean[] { true, false, true, false,false};

       builder.setMultiChoiceItems(items, result,

              new OnMultiChoiceClickListener() {

                  public void onClick(DialogInterface dialog, int which,

                         boolean isChecked) {

                     Toast.makeText(getApplicationContext(),

                            items[which] + isChecked, 0).show();

                     result[which] = isChecked;

                  }

              });

       builder.setPositiveButton("提交", new OnClickListener() {

           public void onClick(DialogInterface dialog, int which) {

              StringBuffer sb = new StringBuffer();

               for (int i = 0; i < result.length; i++) {

                  if (result[i]) {

                     sb.append(items[i] + ",");

                  }

              }

              Toast.makeText(getApplicationContext(),

                     "您选中了，" + sb.toString(), 0).show();

           }

       });

       // builder.create().show();

       builder.show();

    }

    // 进度条对话框

    public void click4(View view) {

       ProgressDialog pd = new ProgressDialog(this);

       pd.setTitle("提醒");

       pd.setMessage("正在加载数据...请稍等。");

       pd.show();

    }

    // 带进度的进度条对话框

    public void click5(View view) {

       final ProgressDialog pd = new ProgressDialog(this);

       pd.setTitle("提醒");

       pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

       pd.setMax(100);

       pd.setMessage("正在加载数据...请稍等。");

       pd.show();

       new Thread() {

           public void run() {

              for (int i = 0; i < 100; i++) {

                  try {

                      Thread.sleep(40);

                  } catch (InterruptedException e) {

                     e.printStackTrace();

                  }

                  pd.setProgress(i);

              }

              pd.dismiss();

           };

       }.start();

    }

}

<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=".MainActivity" >

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true"

        android:text="@string/hello_world" />

</RelativeLayout>

package com.itheima.sensor;

import android.app.Activity;

import android.hardware.Sensor;

import android.hardware.SensorEvent;

import android.hardware.SensorEventListener;

import android.hardware.SensorManager;

import android.os.Bundle;

public class MainActivity extends Activity {

         private SensorManager sm;

         private MyListener listener;

         @Override

         protected void onCreate(Bundle savedInstanceState) {

                   super.onCreate(savedInstanceState);

                   setContentView(R.layout.activity_main);

                   sm = (SensorManager) getSystemService(SENSOR_SERVICE);

                   //光线传感器

                   Sensor sensor = sm.getDefaultSensor(Sensor.TYPE_LIGHT);

                   listener = new MyListener();

                   sm.registerListener(listener, sensor,SensorManager.SENSOR_DELAY_UI);

         }

         private class MyListener implements SensorEventListener {

                   public void onSensorChanged(SensorEvent event) {

                            float light = event.values[0];

                            System.out.println("light:" + light);

                   }

                   public void onAccuracyChanged(Sensor sensor, int accuracy) {

                   }       

         }

         @Override

         protected void onDestroy() {

                   sm.unregisterListener(listener);

                   listener = null;

                   super.onDestroy();

         }

}

<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"

    android:background="#000000"

    tools:context=".MainActivity" >

    <ImageView

        android:id="@+id/iv"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true"

        android:src="@drawable/zn" />

</RelativeLayout>

package com.itheima.sensor;

import android.app.Activity;

import android.hardware.Sensor;

import android.hardware.SensorEvent;

import android.hardware.SensorEventListener;

import android.hardware.SensorManager;

import android.os.Bundle;

import android.view.animation.Animation;

import android.view.animation.RotateAnimation;

import android.widget.ImageView;

public class MainActivity extends Activity {

         private SensorManager sm;

         private MyListener listener;

         private ImageView iv;

         @SuppressWarnings("deprecation")

         @Override

         protected void onCreate(Bundle savedInstanceState) {

                   super.onCreate(savedInstanceState);

                   setContentView(R.layout.activity_main);

                   sm = (SensorManager) getSystemService(SENSOR_SERVICE);

                   iv = (ImageView) findViewById(R.id.iv);

                   //方向传感器

                   Sensor sensor = sm.getDefaultSensor(Sensor.TYPE_ORIENTATION);

                   listener = new MyListener();

                   sm.registerListener(listener, sensor, SensorManager.SENSOR_DELAY_GAME);

         }

         private class MyListener implements SensorEventListener {

                   float lastangle = 0;

                   @Override

                   public void onSensorChanged(SensorEvent event) {

                            // 0=North, 90=East, 180=South, 270=West 

                            float angle = event.values[0];//手机与正北方向的夹角

                            System.out.println("angle:"+angle);

                            RotateAnimation ra = new RotateAnimation(-lastangle, angle,

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

                            iv.startAnimation(ra);

                            lastangle = angle;

                   }

                   @Override

                   public void onAccuracyChanged(Sensor sensor, int accuracy) {

                   }

         }

         @Override

         protected void onDestroy() {

                   sm.unregisterListener(listener);

                   listener = null;

                   super.onDestroy();

         }

}

<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=".MainActivity" >

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal" >

        <Button

            android:onClick="rotate"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="旋转" />

        <Button

            android:onClick="scale"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="缩放" />

        <Button

            android:onClick="trans"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="位移" />

        <Button

            android:onClick="alpha"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="透明度" />

           <Button

            android:onClick="set"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="组合动画" />

    </LinearLayout>

    <ImageView

        android:id="@+id/iv"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true"

        android:src="@drawable/ic_launcher" />

</RelativeLayout>

package com.itheima.tween;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.animation.AlphaAnimation;

import android.view.animation.Animation;

import android.view.animation.AnimationSet;

import android.view.animation.AnimationUtils;

import android.view.animation.RotateAnimation;

import android.view.animation.ScaleAnimation;

import android.view.animation.TranslateAnimation;

import android.widget.ImageView;

public class MainActivity extends Activity {

    private ImageView iv;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       setContentView(R.layout.activity_main);

       iv = (ImageView) findViewById(R.id.iv);

    }

    // 透明度动画

    public void alpha(View view) {

       // 最开始的透明度到最后的透明度，从0.0f到1.0f，从透明到不透明

       Animation aa = new AlphaAnimation(0.0f, 1.0f);

       // 设置动画播放的时间

       aa.setDuration(2000);

       // 设置动画重复播放的次数，下面表示重复播放3次，表示重复播放2，如果是

       // -1(Animation.INFINITE)表示一直重复播放

       aa.setRepeatCount(3);

       // aa.setRepeatCount(Animation.INFINITE);

       // 如果不指定这个值，默认是重复播放的。下面表示：透明-->不透明-->透明

       aa.setRepeatMode(Animation.REVERSE);

       // true:界面为动画完成之后的效果

       aa.setFillAfter(true);

       // 开始播放

       iv.startAnimation(aa);

    }

    /**

     * 位移动画

     *

     * @param view

     */

    public void trans(View view) {

       // 下面表示x轴从0.0f-->1.0f;0.0f-->1.0f

       // android.view.animation.TranslateAnimation.TranslateAnimation(int

       // fromXType, float fromXValue, int toXType, float toXValue, int

       // fromYType, float fromYValue, int toYType, float toYValue)

       TranslateAnimation ta = new TranslateAnimation(

              Animation.RELATIVE_TO_PARENT, // 相对于父窗体

              0.0f, // 如果是320宽度的模拟器。这里0.0f表示是是父窗体的0%

              Animation.RELATIVE_TO_PARENT, // 还是相对于父窗体

              1.0f, // 表示父亲的100%

              Animation.RELATIVE_TO_PARENT, 0.0f,

              Animation.RELATIVE_TO_PARENT, 1.0f);

       ta.setDuration(2000); // 设置时间间隔

       ta.setRepeatCount(-1); // -1表示重复的操作

       // 倒叙播放

       ta.setRepeatMode(Animation.REVERSE);

       iv.startAnimation(ta);

    }

    // 缩放动画

    public void scale(View view) {

       ScaleAnimation sa = new ScaleAnimation(0.1f, // 缩放的时候最开始的比例

              2.0f, // 上面这两个参数x周表示从0.1倍到2倍

              0.1f, 2.0f, // y轴从0.1-->2.0倍

              Animation.RELATIVE_TO_SELF, // 后面4个参数的组合表示从自己中心点开始缩小放大

               0.5f, Animation.RELATIVE_TO_SELF, 0.5f);

       sa.setDuration(2000); // 设置时间间隔

       sa.setRepeatCount(1); // -1表示重复的操作

       // 倒叙播放

       sa.setRepeatMode(Animation.REVERSE);

       iv.startAnimation(sa);

    }

    // 旋转动画

    public void rotate(View view) {

       RotateAnimation ra = new RotateAnimation(

              0, // 开始的角度

              360, // 旋转的解读

              Animation.RELATIVE_TO_SELF,

              0.0f,

              Animation.RELATIVE_TO_SELF,

              0.0f);

       ra.setDuration(2000);

       ra.setRepeatCount(1);

       ra.setRepeatMode(Animation.REVERSE);

       iv.startAnimation(ra);

    }

    //动画组合(包含多种动画)

    public void set(View view) {

       AnimationSet set = new AnimationSet(false);

       TranslateAnimation ta = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, -0.5f,

              Animation.RELATIVE_TO_PARENT, 0.5f,

              Animation.RELATIVE_TO_PARENT, -0.5f,

              Animation.RELATIVE_TO_PARENT, 0.5f);

       ta.setDuration(2000);

       ta.setRepeatCount(1);

       ta.setRepeatMode(Animation.REVERSE);

       ScaleAnimation sa = new ScaleAnimation(0.1f, 2.0f, 0.1f, 2.0f, Animation.RELATIVE_TO_SELF,

              0.5f, Animation.RELATIVE_TO_SELF, 0.5f);

       sa.setDuration(2000);

       sa.setRepeatCount(1);

       sa.setRepeatMode(Animation.REVERSE);

       RotateAnimation ra = new RotateAnimation(0, 360, Animation.RELATIVE_TO_SELF,

              0.0f, Animation.RELATIVE_TO_SELF, 0.0f);

       ra.setDuration(2000);

       ra.setRepeatCount(1);

       ra.setRepeatMode(Animation.REVERSE);

       set.addAnimation(ra);

       //set.addAnimation(ta);

       set.addAnimation(sa);

       iv.startAnimation(set);

    }

}

<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=".MainActivity" >

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal" >

        <Button

            android:onClick="rotate"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="旋转" />

        <Button

            android:onClick="scale"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="缩放" />

        <Button

            android:onClick="trans"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="位移" />

        <Button

            android:onClick="alpha"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="透明度" />

           <Button

            android:onClick="set"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="组合动画" />

    </LinearLayout>

    <ImageView

        android:id="@+id/iv"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true"

        android:src="@drawable/ic_launcher" />

</RelativeLayout>

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

<!--

android:fromAlpha="0.0"  开始的透明度

android:toAlpha="1.0"    结束的透明度

android:duration="2000"  动画播放的时间

android:repeatCount="1"  动画重复的次数

android:repeatMode="reverse"    重复的模式

android:fillAfter="true"  

-->

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

    android:fromAlpha="0.0"

    android:toAlpha="1.0"  

    android:duration="2000"

    android:repeatCount="2"

    android:repeatMode="reverse"

    android:fillAfter="true">

</alpha>

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

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

    android:fromDegrees="0"

    android:toDegrees="360"

    android:pivotX="50%"

    android:pivotY="50%"

    android:duration="2000"

    android:repeatCount="1"

    android:repeatMode="reverse" >

</rotate>

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

<!--

android:fromXScale="0.1"

android:toXScale="2.0"

android:fromYScale="0.1"

android:toYScale="2.0"

android:duration="2000"

android:pivotX="50%"

android:pivotY="50%"

android:repeatCount="1"

android:repeatMode="reverse"

-->

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

    android:fromXScale="0.1"

    android:toXScale="2.0"

    android:fromYScale="0.1"

    android:toYScale="2.0"

    android:duration="2000"

    android:pivotX="50%"

    android:pivotY="50%"

    android:repeatCount="1"

    android:repeatMode="reverse">

</scale>

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

<!--

android:fromXDelta="-50%p"   左侧

android:toXDelta="50%p"      右侧

android:fromYDelta="0"       表示y轴方向上不变化

android:toYDelta="0"        

android:duration="2000"      播放2秒

android:repeatCount="1"      重复1次

android:repeatMode="reverse"

 -->

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

    android:fromXDelta="-50%p"

    android:toXDelta="50%p"

    android:fromYDelta="0"

    android:toYDelta="0"

    android:duration="2000"

    android:repeatCount="1"

    android:repeatMode="reverse">

</translate>

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

<set>

    <alpha

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

        android:duration="2000"

        android:fillAfter="true"

        android:fromAlpha="0.0"

        android:repeatCount="1"

        android:repeatMode="reverse"

        android:toAlpha="1.0" >

    </alpha>

    <rotate

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

        android:duration="2000"

        android:fromDegrees="0"

        android:pivotX="50%"

        android:pivotY="50%"

        android:repeatCount="1"

        android:repeatMode="reverse"

        android:toDegrees="360" >

    </rotate>

    <scale

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

        android:duration="2000"

        android:fromXScale="0.1"

        android:fromYScale="0.1"

        android:pivotX="50%"

        android:pivotY="50%"

        android:repeatCount="1"

        android:repeatMode="reverse"

        android:toXScale="2.0"

        android:toYScale="2.0" >

    </scale>

    <translate

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

        android:duration="2000"

        android:fromXDelta="-50%p"

        android:fromYDelta="0"

        android:repeatCount="1"

        android:repeatMode="reverse"

        android:toXDelta="50%p"

        android:toYDelta="0" >

    </translate>

</set>

package com.itheima.tween;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.animation.Animation;

import android.view.animation.AnimationUtils;

import android.widget.ImageView;

public class MainActivity extends Activity {

         private ImageView iv;

         @Override

         protected void onCreate(Bundle savedInstanceState) {

                   super.onCreate(savedInstanceState);

                   setContentView(R.layout.activity_main);

                   iv = (ImageView) findViewById(R.id.iv);

         }

         // 透明度动画

         public void alpha(View view) {

                   Animation aa = AnimationUtils.loadAnimation(this, R.anim.alpha);

                   iv.startAnimation(aa);

         }

         /**

          * 位移动画

          *

          * @param view

          */

         public void trans(View view) {

                   Animation ta = AnimationUtils.loadAnimation(this, R.anim.trans);

                   iv.startAnimation(ta);

         }

         // 缩放动画

         public void scale(View view) {

                   Animation sa = AnimationUtils.loadAnimation(this, R.anim.scale);

                   iv.startAnimation(sa);

         }

         // 旋转动画

         public void rotate(View view) {

                   Animation ra = AnimationUtils.loadAnimation(this, R.anim.rotate);

                   iv.startAnimation(ra);

         }

         //动画组合(包含多种动画)

         public void set(View view) {

                   Animation set = AnimationUtils.loadAnimation(this, R.anim.set);

                   iv.startAnimation(set);

         }

}

<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=".MainActivity" >

    <ImageView

        android:id="@+id/iv"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true"

       />

</RelativeLayout>

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

<!--

android:oneshot="false"  表示重复性的播放  如果为true表示只播放一次

 -->

<animation-list xmlns:android="http://schemas.android.com/apk/res/android"

    android:oneshot="false"

    >

    <!-- 下面表示使用指定的图片播放200毫秒 -->

    <item

        android:drawable="@drawable/girl_1"

        android:duration="200"/>

    <item

        android:drawable="@drawable/girl_2"

        android:duration="200"/>

    <item

        android:drawable="@drawable/girl_3"

        android:duration="200"/>

    <item

        android:drawable="@drawable/girl_4"

        android:duration="200"/>

    <item

        android:drawable="@drawable/girl_5"

        android:duration="200"/>

    <item

        android:drawable="@drawable/girl_6"

        android:duration="400"/>

    <item

        android:drawable="@drawable/girl_7"

        android:duration="400"/>

    <item

        android:drawable="@drawable/girl_6"

        android:duration="400"/>

    <item

        android:drawable="@drawable/girl_7"

        android:duration="400"/>

    <item

        android:drawable="@drawable/girl_6"

        android:duration="400"/>

    <item

        android:drawable="@drawable/girl_7"

        android:duration="400"/>

    <item

        android:drawable="@drawable/girl_8"

        android:duration="200"/>

    <item

        android:drawable="@drawable/girl_9"

        android:duration="200"/>

    <item

        android:drawable="@drawable/girl_10"

        android:duration="200"/>

    <item

        android:drawable="@drawable/girl_11"

        android:duration="200"/>

</animation-list>

package com.itheima.frameanimation;

import android.app.Activity;

import android.graphics.drawable.AnimationDrawable;

import android.os.Bundle;

import android.view.MotionEvent;

import android.widget.ImageView;

public class MainActivity extends Activity {

    private ImageView iv;

    private AnimationDrawable mAnimationDrawable;

    protected void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       setContentView(R.layout.activity_main);

       iv = (ImageView) findViewById(R.id.iv);

       // 把xml文件的动画资源设置为iv背景

       iv.setBackgroundResource(R.drawable.girl);

       // 获取设置的动画资源。 执行可能需要花费一定的时间

       mAnimationDrawable = (AnimationDrawable) iv.getBackground();

    }

    public boolean onTouchEvent(MotionEvent event) {

       if (event.getAction() == MotionEvent.ACTION_DOWN) {

           mAnimationDrawable.start();

           return true;

       }

       return super.onTouchEvent(event);

    }

}