Приложение к лабораторной работе

Приложение к лабораторной работе

1. 
   Button Example
   
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     res/layout/activity_main.xml
     
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     package="com.example.application"
     
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     android:versionCode="1"
     
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     android:versionName="1.0" >
     
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     android:minSdkVersion="8"
     
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     android:targetSdkVersion="15" />
     
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     android:icon="@drawable/ic_launcher"
     
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     android:label="@string/app_name">
     
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     android:name=".MainActivity"
     
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     android:label="@string/title_activity_main" >
     
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     src/MainActivity.java
     
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     package com.example.application;
     
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     import android.app.Activity;
     
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     import android.graphics.Color;
     
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     import android.os.Bundle;
     
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     import android.view.View;
     
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     import android.view.View.OnClickListener;
     
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     import android.widget.Button;
     
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     import android.widget.LinearLayout;
     
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     import android.widget.Toast;
     
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     public class MainActivity extends Activity implements OnClickListener {
     
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     private Button switchToGreen;
     
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     private Button switchToRed;
     
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     private Button switchToBlue;
     
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     private LinearLayout screenLayout;
     
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     private Toast informationToast;
     
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     @Override
     
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     public void onCreate(Bundle savedInstanceState) {
     
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     super.onCreate(savedInstanceState);
     
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     setContentView(R.layout.activity_main);
     
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     // init buttons
     
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     switchToBlue = (Button) findViewById(R.id.switchBlue);
     
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     switchToGreen = (Button) findViewById(R.id.switchGreen);
     
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     switchToRed = (Button) findViewById(R.id.switchRed);
     
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     screenLayout = (LinearLayout) findViewById(R.id.screenLayout);
     
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     // setup listeners
     
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     switchToBlue.setOnClickListener(this);
     
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     switchToRed.setOnClickListener(this);
     
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     switchToGreen.setOnClickListener(this);
     
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     informationToast = Toast.makeText(this, "", Toast.LENGTH_SHORT);
     
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     }
     
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     public void onClick(View view) {
     
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     if (switchToBlue.equals(view)) {
     
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     screenLayout.setBackgroundColor(Color.BLUE);
     
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     showToast("Hello blue");
     
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     } else if (switchToRed.equals(view)) {
     
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     screenLayout.setBackgroundColor(Color.RED);
     
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     showToast("Hello red");
     
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     } else if (switchToGreen.equals(view)) {
     
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     screenLayout.setBackgroundColor(Color.GREEN);
     
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     showToast("Hello green");
     
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     }
     
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     }
     
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     private void showToast(String text) {
     
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     informationToast.cancel();
     
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     informationToast.setText(text);
     
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     informationToast.show();
     
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     }
     
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     }
     
2. 
   Animation Example
   
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     res/anim/frame_anim.xml
     
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     android:oneshot="false" >
     
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     android:drawable="@drawable/ic_launcher"
     
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     android:duration="200"/>
     
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     android:drawable="@drawable/ic_launcher1"
     
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     android:duration="200"/>
     
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     android:drawable="@drawable/ic_launcher2"
     
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     android:duration="200"/>
     
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     android:drawable="@drawable/ic_launcher3"
     
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     android:duration="200"/>
     
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     res/anim/transform_anim.xml
     
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     android:shareInterpolator="false" >
     
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     android:duration="700"
     
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     android:fillAfter="false"
     
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     android:fromXScale="1.0"
     
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     android:fromYScale="1.0"
     
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     android:interpolator="@android:anim/accelerate_decelerate_interpolator"
     
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     android:pivotX="50%"
     
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     android:pivotY="50%"
     
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     android:toXScale="1.4"
     
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     android:toYScale="0.6" />
     
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     android:duration="400"
     
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     android:fillBefore="false"
     
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     android:fromXScale="1.4"
     
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     android:fromYScale="0.6"
     
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     android:pivotX="50%"
     
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     android:pivotY="50%"
     
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     android:startOffset="700"
     
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     android:toXScale="0.0"
     
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     android:toYScale="0.0" />
     
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     android:duration="400"
     
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     android:fromDegrees="0"
     
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     android:pivotX="50%"
     
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     android:pivotY="50%"
     
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     android:startOffset="700"
     
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     android:toDegrees="-45"
     
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     android:toYScale="0.0" />
     
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     src/MainActivity.java
     
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     package com.example.application;
     
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     import android.app.Activity;
     
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     import android.graphics.Color;
     
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     import android.graphics.drawable.AnimationDrawable;
     
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     import android.os.Bundle;
     
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     import android.view.View;
     
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     import android.view.View.OnClickListener;
     
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     import android.view.animation.Animation;
     
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     import android.view.animation.AnimationUtils;
     
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     import android.widget.Button;
     
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     import android.widget.ImageView;
     
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     public class MainActivity extends Activity implements OnClickListener {
     
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     private Button startFrameAnim;
     
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     private Button startTransformAnim;
     
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     private Button cancelAnim;
     
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     private ImageView animationView;
     
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     @Override
     
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     public void onCreate(Bundle savedInstanceState) {
     
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     super.onCreate(savedInstanceState);
     
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     setContentView(R.layout.activity_main);
     
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     startFrameAnim = (Button) findViewById(R.id.frameAnimationStart);
     
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     startTransformAnim= (Button) findViewById(R.id.transformAnimationStart);
     
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     cancelAnim = (Button) findViewById(R.id.cancelAnimation);
     
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     animationView = (ImageView) findViewById(R.id.animationView);
     
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     startFrameAnim.setOnClickListener(this);
     
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     startTransformAnim.setOnClickListener(this);
     
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     cancelAnim.setOnClickListener(this);
     
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     }
     
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     public void onClick(View v) {
     
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     if (startFrameAnim.equals(v)) {
     
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     animationView.setBackgroundResource(R.anim.frame_anim);
     
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     AnimationDrawable animation =
     
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     (AnimationDrawable) animationView.getBackground();
     
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     animation.start();
     
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     } else if (startTransformAnim.equals(v)) {
     
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     animationView.setBackgroundResource(R.drawable.ic_launcher);
     
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     Animation transformAnimation =
     
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     AnimationUtils.loadAnimation(this, R.anim.transform_anim);
     
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     animationView.startAnimation(transformAnimation);
     
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     } else if (cancelAnim.equals(v)) {
     
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     animationView.setBackgroundColor(Color.BLACK);
     
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     }
     
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     }
     
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     }
     
3. 
   Location Example
   
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     src/MainActivity.java
     
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     package com.example.application;
     
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     import java.util.Date;
     
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     import android.app.Activity;
     
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     import android.location.Criteria;
     
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     import android.location.Location;
     
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     import android.location.LocationListener;
     
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     import android.location.LocationManager;
     
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     import android.os.Bundle;
     
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     import android.widget.TextView;
     
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     public class MainActivity extends Activity implements LocationListener {
     
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     private TextView latitudeLabel;
     
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     private TextView longitudeLabel;
     
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     private TextView statusLabel;
     
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     private LocationManager locationManager;
     
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     @Override
     
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     public void onCreate(Bundle savedInstanceState) {
     
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     super.onCreate(savedInstanceState);
     
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     setContentView(R.layout.activity_main);
     
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     latitudeLabel = (TextView) findViewById(R.id.latitudeLabel);
     
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     longitudeLabel = (TextView) findViewById(R.id.longitudeLabel);
     
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     statusLabel = (TextView) findViewById(R.id.statusLabel);
     
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     locationManager = (LocationManager) getSystemService(Activity.LOCATION_SERVICE);
     
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     }
     
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     @Override
     
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     protected void onResume() {
     
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     super.onResume();
     
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     // construct a criteria with best accuracy
     
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     Criteria criteria = new Criteria();
     
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     criteria.setAccuracy(Criteria.ACCURACY_FINE);
     
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     // get best ENABLED provider that meets the criteria
     
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     String provider = locationManager.getBestProvider(criteria, true);
     
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     // request the updates
     
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     locationManager.requestLocationUpdates(provider, 0, 0, this);
     
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     }
     
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     @Override
     
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     protected void onPause() {
     
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     super.onPause();
     
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     locationManager.removeUpdates(this);
     
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     }
     
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     public void onLocationChanged(Location location) {
     
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     statusLabel.setText("Location recieved at " + new Date());
     
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     latitudeLabel.setText("Latitude: " + location.getLatitude());
     
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     longitudeLabel.setText("Longitude: " + location.getLongitude());
     
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     }
     
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     public void onProviderDisabled(String provider) {
     
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     }
     
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     public void onProviderEnabled(String provider) {
     
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     }
     
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     public void onStatusChanged(String provider, int status, Bundle extras) {
     
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     }
     
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     }
     
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     AndroidManifest.xml
     
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     package="com.example.application"
     
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     android:versionCode="1"
     
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     android:versionName="1.0" >
     
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     android:minSdkVersion="8"
     
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     android:targetSdkVersion="15" />
     
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     android:icon="@drawable/ic_launcher"
     
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     android:label="@string/app_name">
     
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     android:name=".MainActivity"
     
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     android:label="@string/title_activity_main" >
     
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