Практика разработки простейших приложений для Android

res/anim/frame_anim.xml
<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
    android:oneshot="false" >

    <item
        android:drawable="@drawable/ic_launcher"
        android:duration="200"/>
    <item
        android:drawable="@drawable/ic_launcher1"
        android:duration="200"/>
    <item
        android:drawable="@drawable/ic_launcher2"
        android:duration="200"/>
    <item
        android:drawable="@drawable/ic_launcher3"
        android:duration="200"/>

</animation-list>

res/anim/transform_anim.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false" >

    <scale
        android:duration="700"
        android:fillAfter="false"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:interpolator="@android:anim/accelerate_decelerate_interpolator"
        android:pivotX="50%"
        android:pivotY="50%"
        android:toXScale="1.4"
        android:toYScale="0.6" />

    <set android:interpolator="@android:anim/decelerate_interpolator" >
        <scale
            android:duration="400"
            android:fillBefore="false"
            android:fromXScale="1.4"
            android:fromYScale="0.6"
            android:pivotX="50%"
            android:pivotY="50%"
            android:startOffset="700"
            android:toXScale="0.0"
            android:toYScale="0.0" />

        <rotate
            android:duration="400"
            android:fromDegrees="0"
            android:pivotX="50%"
            android:pivotY="50%"
            android:startOffset="700"
            android:toDegrees="-45"
            android:toYScale="0.0" />
    </set>

</set>

src/MainActivity.java

package com.example.application;

import android.app.Activity;
import android.graphics.Color;
import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ImageView;

public class MainActivity extends Activity implements OnClickListener {
  
  private Button startFrameAnim;
  private Button startTransformAnim;
  private Button cancelAnim;
  private ImageView animationView;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    startFrameAnim = (Button) findViewById(R.id.frameAnimationStart);
    startTransformAnim= (Button) findViewById(R.id.transformAnimationStart);
    cancelAnim = (Button) findViewById(R.id.cancelAnimation);
    animationView = (ImageView) findViewById(R.id.animationView);
    
    startFrameAnim.setOnClickListener(this);
    startTransformAnim.setOnClickListener(this);
    cancelAnim.setOnClickListener(this);
  }

  public void onClick(View v) {
    if (startFrameAnim.equals(v)) {
      animationView.setBackgroundResource(R.anim.frame_anim);
  AnimationDrawable animation = 
(AnimationDrawable) animationView.getBackground();
      animation.start();
    } else if (startTransformAnim.equals(v)) {
      animationView.setBackgroundResource(R.drawable.ic_launcher);
  Animation transformAnimation = 
AnimationUtils.loadAnimation(this, R.anim.transform_anim);
      animationView.startAnimation(transformAnimation);
    } else if (cancelAnim.equals(v)) {
      animationView.setBackgroundColor(Color.BLACK);
    }
  }
}

src/MainActivity.java

package com.example.application;

import java.util.Date;

import android.app.Activity;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.widget.TextView;

public class MainActivity extends Activity implements LocationListener {
  private TextView latitudeLabel;
  private TextView longitudeLabel;
  private TextView statusLabel;
  private LocationManager locationManager;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    latitudeLabel = (TextView) findViewById(R.id.latitudeLabel);
    longitudeLabel = (TextView) findViewById(R.id.longitudeLabel);
    statusLabel = (TextView) findViewById(R.id.statusLabel);

locationManager = (LocationManager) getSystemService(Activity.LOCATION_SERVICE);
  }

  @Override
  protected void onResume() {
    super.onResume();
    // construct a criteria with best accuracy
    Criteria criteria = new Criteria();
    criteria.setAccuracy(Criteria.ACCURACY_FINE);
    // get best ENABLED provider that meets the criteria
    String provider = locationManager.getBestProvider(criteria, true);
    // request the updates
    locationManager.requestLocationUpdates(provider, 0, 0, this);
  }

  @Override
  protected void onPause() {
    super.onPause();
    locationManager.removeUpdates(this);
  }

  public void onLocationChanged(Location location) {
    statusLabel.setText("Location recieved at " + new Date());
    latitudeLabel.setText("Latitude: " + location.getLatitude());
    longitudeLabel.setText("Longitude: " + location.getLongitude());
  }

  public void onProviderDisabled(String provider) {
  }

  public void onProviderEnabled(String provider) {
  }

  public void onStatusChanged(String provider, int status, Bundle extras) {
  }
}

AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.application"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />
    
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name">
        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>