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Android: Learning about Arrays. Need a little help

开发者 https://www.devze.com 2023-03-16 06:11 出处：网络
So I\'m close with my code.I\'ve been trying to get my Soundboard to utilize Set As Ringtone for two days now. It\'s obvious I need to utilize Arrays.
相关专题：androidarrays

So I'm close with my code. I've been trying to get my Soundboard to utilize Set As Ringtone for two days now. It's obvious I need to utilize Arrays.

Three sections of code, but not quite sure how to implement it.

1: The array decleration:

int [] buttonArray = {R.id.button1, R.raw.button2};

2: The for statement (WRONG - This is what I'm not sure about)

for (int i=0; i<buttonArray.length; i++){  
      buttonArray[i];  
      }

3: The button switch:(WRONG - I know this is wrong too)

public void onClick(View v) {

    switch (v.getId()) {
    case buttonArray[i]:

@Ted - Ok, below is my full code. The Soundboard portion works great, it's the Set as Ringtone that's not working. And I know why. I am using R.raw.ifightsong for the function. I figured I need an array there so it differentiate between the sounds. Not to mention I am going to have 10 buttons and so I"m going to have A LOT of code. I wanted to eliminate A LOT of code by using an array.

package com.hawkaddictsoundboard;



import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.media.MediaPlayer;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class HawkeyeAddictSoundboardActivity extends Activity implements OnClickListener {
    /** Called when the activity is first created. */
    Button fightsong;
    Button oniowa;

    MediaPlayer mMediaPlayer;

    int[] soundArray = {R.raw.ifightsong,R.raw.oniowa}; // etc...


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


        fightsong = (Button) findViewById(R.id.fightsong_button);
        fightsong.setOnClickListener(this);
        oniowa = (Button) findViewById(R.id.oniowa_button);
        oniowa.setOnClickListener(this);
        registerForContextMenu(fightsong);  
        registerForContextMenu(oniowa); 
    }
    @Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.fightsong_button:
               if (mMediaPlayer!=null && mMediaPlayer.isPlaying()) {
                   mMediaPlayer.stop();
                   mMediaPlayer.reset();
                   mMediaPlayer.start();

                    }
               else{
                    if (mMediaPlayer!=null){
                        mMediaPlayer.reset();
                        mMediaPlayer.release();
                }
                    mMediaPlayer = MediaPlayer.create(getBaseContext(), R.raw.ifightsong);
                    mMediaPlayer.start();
        // TODO Auto-generated method stub
         }
               break;
        case R.id.oniowa_button:
               if (mMediaPlayer!=null && mMediaPlayer.isPlaying()) {
                   mMediaPlayer.stop();
                   mMediaPlayer.reset();
                   mMediaPlayer.start();

               }
               else{
                    if (mMediaPlayer!=null){
                        mMediaPlayer.reset();
                        mMediaPlayer.release();
                }
                    mMediaPlayer = MediaPlayer.create(getBaseContext(), R.raw.oniowa);
                    mMediaPlayer.start();
        // TODO Auto-generated method stub
         }
               break;
    }}
     @Override
     public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) {
     super.onCreateContextMenu(menu, v, menuInfo);
     menu.setHeaderTitle("Set As...");
     menu.add(0, v.getId(), 0, "Ringtone");
     menu.add(0, v.getId(), 0, "Notification");
     }

     @Override  
     public boolean onContextItemSelected(MenuItem item) {  
         if(item.getTitle().equals("Ringtone")){function1(item.getItemId());}  
         else if(item.getTitle().equals("Notification")){function2(item.getItemId());}
         else return false; 
     return true;  
     }  

     public void function1(int id){ 
         if (saveringifightsong(R.raw.ifightsong)){  
             // Code if successful  
             Toast.makeText(this, "Saved as Ringtone", Toast.LENGTH_SHORT).show();
             }  
             else  
             {  
             // Code if unsuccessful  
             Toast.makeText(this, "Failed - Check your SDCard", Toast.LENGTH_SHORT).show();
             }

     }

     public void function2(int id){  
         if (savenotifightsong(R.raw.ifightsong)){  
             // Code if successful  
             Toast.makeText(this, "Saved as Notification", Toast.LENGTH_SHORT).show();
             }  
             else  
             {  
             // Code if unsuccessful  
             Toast.makeText(this, "Failed - Check your SDCard", Toast.LENGTH_SHORT).show();
             }}



     public boolean saveringifightsong(int ressound){
         byte[] buffer=null;
         InputStream fIn = getBaseContext().getResources().openRawResource(ressound);
         int size=0;
           try {  
                size = fIn.available();  
                buffer = new byte[size];  
                fIn.read(buffer);  
                fIn.close();  
               } catch (IOException e) {  
                // TODO Auto-generated catch block  
                return false;  
               }
                String path="/sdcard/media/audio/ringtones/";  
                String filename="ifightsong_ring"+".ogg"; 

           boolean exists = (new File(path)).exists();  
           if (!exists){new File(path).mkdirs();}  

           FileOutputStream save;  
           try {  
            save = new FileOutputStream(path+filename);  
            save.write(buffer);  
            save.flush();  
            save.close();  
           } catch (FileNotFoundException e) {  
            // TODO Auto-generated catch block  
            return false;  
           } catch (IOException e) {  
            // TODO Auto-generated catch block  
            return false;  
           }      

           sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://"+path+filename)));  

           File k = new File(path, filename);  

           ContentValues values = new ContentValues();  
           values.put(MediaStore.MediaColumns.DATA, k.getAbsolutePath());  
           values.put(MediaStore.MediaColumns.TITLE, "Iowa Fight Song");  
           values.put(MediaStore.MediaColumns.MIME_TYPE, "audio/ogg");  
           values.put(MediaStore.Audio.Media.ARTIST, "Hawkeye Sounds ");  
           values.put(MediaStore.Audio.Media.IS_RINGTONE, true);  
           values.put(MediaStore.Audio.Media.IS_NOTIFICATION, false);  
           values.put(MediaStore.Audio.Media.IS_ALARM, false);  
           values.put(MediaStore.Audio.Media.IS_MUSIC, false);  

           //Insert it into the database  
            Uri uri = MediaStore.Audio.Media.getContentUriForPath(k.getAbsolutePath());

            getContentResolver().delete(uri, MediaStore.MediaColumns.DATA + "=\"" + k.getAbsolutePath() + "\"", null);

            Uri newUri = getContentResolver().insert(uri, values);

            RingtoneManager.setActualDefaultRingtoneUri(
                    HawkeyeAddictSoundboardActivity.this,
              RingtoneManager.TYPE_RINGTONE,
              newUri
            );
            return true;  
          }   
     public boolean savenotifightsong(int ressound){
         byte[] buffer=null;
         InputStream fIn = getBaseContext().getResources().openRawResource(ressound);
         int size=0;
           try {  
                size = fIn.available();  
                buffer = new byte[size];  
                fIn.read(buffer);  
                fIn.close();  
               } catch (IOException e) {  
                // TODO Auto-generated catch block  
                return false;  
               }
                String path="/sdcard/media/audio/ringtones/";  
                String filename="ifightsong_not"+".ogg"; 

           boolean exists = (new File(path)).exists();  
           if (!exists){new File(path).mkdirs();}  

           FileOutputStream save;  
           try {  
            save = new FileOutputStream(path+filename);  
            save.write(buffer);  
            save.flush();  
            save.close();  
           } catch (FileNotFoundException e) {  
            // TODO Auto-generated catch block  
            return false;  
           } catch (IOException e) {  
            // TODO Auto-generated catch block  
            return false;  
           }      

           sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://"+path+filename)));  

           File k = new File(path, filename);  

           ContentValues values = new ContentValues();  
           values.put(MediaStore.MediaColumns.DATA, k.getAbsolutePath());  
           values.put(MediaStore.MediaColumns.TITLE, "Iowa Fight Song");  
           values.put(MediaStore.MediaColumns.MIME_TYPE, "audio/ogg");  
           values.put(MediaStore.Audio.Media.ARTIST, "Hawkeye Sounds ");  
           values.put(MediaStore.Audio.Media.IS_RINGTONE, false);  
           values.put(MediaStore.Audio.Media.IS_NOTIFICATION, true);  
           values.put(MediaStore.Audio.Media.IS_ALARM, false);  
           values.put(MediaStore.Audio.Media.IS_MUSIC, false);  

           //Insert it into the database  
            Uri uri = MediaStore.Audio.Media.getContentUriForPath(k.getAbsolutePath());

            getContentResolver().delete(uri, MediaStore.MediaColumns.DATA + "=\"" + k.getAbsolutePath() + "\"", null);

            Uri newUri = getContentResolver().insert(uri, values);

            RingtoneManager.setActualDefaultRingtoneUri(
                    HawkeyeAddictSoundboardActivity.this,
              RingtoneManager.TYPE_NOTIFICATION,
              newUri
            );
            return true;  
          }
     public boolean saveringoniowa(int ressound){
         byte[] buffer=null;
         InputStream fIn = getBaseContext().getResources().openRawResource(ressoun开发者_如何学编程d);
         int size=0;
           try {  
                size = fIn.available();  
                buffer = new byte[size];  
                fIn.read(buffer);  
                fIn.close();  
               } catch (IOException e) {  
                // TODO Auto-generated catch block  
                return false;  
               }
                String path="/sdcard/media/audio/ringtones/";  
                String filename="oniowa_ring"+".ogg"; 

           boolean exists = (new File(path)).exists();  
           if (!exists){new File(path).mkdirs();}  

           FileOutputStream save;  
           try {  
            save = new FileOutputStream(path+filename);  
            save.write(buffer);  
            save.flush();  
            save.close();  
           } catch (FileNotFoundException e) {  
            // TODO Auto-generated catch block  
            return false;  
           } catch (IOException e) {  
            // TODO Auto-generated catch block  
            return false;  
           }      

           sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://"+path+filename)));  

           File k = new File(path, filename);  

           ContentValues values = new ContentValues();  
           values.put(MediaStore.MediaColumns.DATA, k.getAbsolutePath());  
           values.put(MediaStore.MediaColumns.TITLE, "On Iowa");  
           values.put(MediaStore.MediaColumns.MIME_TYPE, "audio/ogg");  
           values.put(MediaStore.Audio.Media.ARTIST, "Hawkeye Sounds ");  
           values.put(MediaStore.Audio.Media.IS_RINGTONE, true);  
           values.put(MediaStore.Audio.Media.IS_NOTIFICATION, false);  
           values.put(MediaStore.Audio.Media.IS_ALARM, false);  
           values.put(MediaStore.Audio.Media.IS_MUSIC, false);  

           //Insert it into the database  
            Uri uri = MediaStore.Audio.Media.getContentUriForPath(k.getAbsolutePath());

            getContentResolver().delete(uri, MediaStore.MediaColumns.DATA + "=\"" + k.getAbsolutePath() + "\"", null);

            Uri newUri = getContentResolver().insert(uri, values);

            RingtoneManager.setActualDefaultRingtoneUri(
                    HawkeyeAddictSoundboardActivity.this,
              RingtoneManager.TYPE_RINGTONE,
              newUri
            );
            return true;  
          }
     public boolean savenotoniowa(int ressound){
         byte[] buffer=null;
         InputStream fIn = getBaseContext().getResources().openRawResource(ressound);
         int size=0;
           try {  
                size = fIn.available();  
                buffer = new byte[size];  
                fIn.read(buffer);  
                fIn.close();  
               } catch (IOException e) {  
                // TODO Auto-generated catch block  
                return false;  
               }
                String path="/sdcard/media/audio/ringtones/";  
                String filename="oniowa_not"+".ogg"; 

           boolean exists = (new File(path)).exists();  
           if (!exists){new File(path).mkdirs();}  

           FileOutputStream save;  
           try {  
            save = new FileOutputStream(path+filename);  
            save.write(buffer);  
            save.flush();  
            save.close();  
           } catch (FileNotFoundException e) {  
            // TODO Auto-generated catch block  
            return false;  
           } catch (IOException e) {  
            // TODO Auto-generated catch block  
            return false;  
           }      

           sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://"+path+filename)));  

           File k = new File(path, filename);  

           ContentValues values = new ContentValues();  
           values.put(MediaStore.MediaColumns.DATA, k.getAbsolutePath());  
           values.put(MediaStore.MediaColumns.TITLE, "On Iowa");  
           values.put(MediaStore.MediaColumns.MIME_TYPE, "audio/ogg");  
           values.put(MediaStore.Audio.Media.ARTIST, "Hawkeye Sounds ");  
           values.put(MediaStore.Audio.Media.IS_RINGTONE, false);  
           values.put(MediaStore.Audio.Media.IS_NOTIFICATION, true);  
           values.put(MediaStore.Audio.Media.IS_ALARM, false);  
           values.put(MediaStore.Audio.Media.IS_MUSIC, false);  

           //Insert it into the database  
            Uri uri = MediaStore.Audio.Media.getContentUriForPath(k.getAbsolutePath());

            getContentResolver().delete(uri, MediaStore.MediaColumns.DATA + "=\"" + k.getAbsolutePath() + "\"", null);

            Uri newUri = getContentResolver().insert(uri, values);

            RingtoneManager.setActualDefaultRingtoneUri(
                    HawkeyeAddictSoundboardActivity.this,
              RingtoneManager.TYPE_NOTIFICATION,
              newUri
            );
            return true;  
          }

}

EDIT Please have a look at my getTag for contextmenu below. The question is, am I close Ted?

public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) {
                    int tag;
                    try {
                        tag = Integer.parseInt((String) v.getTag());
                    } catch (Exception ex) {
                        // null or invalid tag -- how'd that happen?
                        return;
                    }
     super.onCreateContextMenu(menu, v, menuInfo);
     menu.setHeaderTitle("Set As...");
     menu.add(0, soundArray[tag], 0, "Ringtone");
     menu.add(0, soundArray[tag], 0, "Notification");
     }

     @Override  
     public boolean onContextItemSelected(MenuItem item) {  
         if(item.getTitle().equals("Ringtone")){function1(item.getItemId());}  
         else if(item.getTitle().equals("Notification")){function2(item.getItemId());}
         else return false; 
     return true;  
     }  


     public void function1(int tag){ 
             if (savering(soundArray[tag])){  
             // Code if successful  
             Toast.makeText(this, "Saved as Ringtone", Toast.LENGTH_SHORT).show();
             }  
             else  
             {  
             // Code if unsuccessful  
             Toast.makeText(this, "Failed - Check your SDCard", Toast.LENGTH_SHORT).show();
             }

     }
     public void function2(int tag){  

         if (savenot(soundArray[tag])){  
             // Code if successful  
             Toast.makeText(this, "Saved as Notification", Toast.LENGTH_SHORT).show();
             }  
             else  
             {  
             // Code if unsuccessful  
             Toast.makeText(this, "Failed - Check your SDCard", Toast.LENGTH_SHORT).show();
             }}

This code makes no sense. This statement:

int [] = {R.raw.sound1, R.raw.sound2};

isn't legal Java—no variable name.

The body of your for loop isn't a statement (it doesn't do anything), so that's not legal either.

The case values need to be compile time constants. You cannot use a case to select among different run-time values. You'll have to re-do the switch as something like this:

int id = v.getId();
for (int button : buttonArray) {
    if (id == button) {
        // got a hit -- process it
        break; // then end the for loop
    }
}

EDIT

Okay, I think I see what you're trying to do. When I do this kind of thing, I find it useful to use the android:tag attribute; it's much more convenient than what you're trying to do. You can set the tag in the layout or do it in code. Here's a method that does it in code.

int[] soundArray = { /* ... */ };

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


    fightsong = (Button) findViewById(R.id.fightsong_button);
    fightsong.setOnClickListener(this);
    fightSong.setTag("0");
    oniowa = (Button) findViewById(R.id.oniowa_button);
    oniowa.setOnClickListener(this);
    oniowa.setTag("1");
    registerForContextMenu(fightsong);  
    registerForContextMenu(oniowa); 
}

@Override
public void onClick(View v) {
    int tag;
    try {
        tag = Integer.parseInt(v.getTag());
    } catch (Exception ex) {
        // null or invalid tag -- how'd that happen?
        return;
    }
    // clear out old media player (if any)
    if (mMediaPlayer != null) {
        if (mMediaPlayer.isPlaying()) {
            mMediaPlayer.stop();
        }
        mMediaPlayer.release();
    }
    // fire up a media player with the correct sound
    mMediaPlayer = MediaPlayer.create(this, soundArray[tag]);
    mMediaPlayer.start();
}

You can also use the tag instead of the view id when creating the context menu.

A sample solution for the issue is below Regarding your code block in swicth case 

you are repeating the information regarding mMediaPlayer in each case which is increasing your code. 

switch (v.getId()) {
        case R.id.fightsong_button:
               if (mMediaPlayer!=null && mMediaPlayer.isPlaying()) {
                   mMediaPlayer.stop();
                   mMediaPlayer.reset();
                   mMediaPlayer.start();

                    }
               else{
                    if (mMediaPlayer!=null){
                        mMediaPlayer.reset();
                        mMediaPlayer.release();
                }
                    mMediaPlayer = MediaPlayer.create(getBaseContext(), R.raw.ifightsong);
                    mMediaPlayer.start();
        // TODO Auto-generated method stub
         }
               break;
        case R.id.oniowa_button:
               if (mMediaPlayer!=null && mMediaPlayer.isPlaying()) {
                   mMediaPlayer.stop();
                   mMediaPlayer.reset();
                   mMediaPlayer.start();

               }
               else{
                    if (mMediaPlayer!=null){
                        mMediaPlayer.reset();
                        mMediaPlayer.release();
                }
                    mMediaPlayer = MediaPlayer.create(getBaseContext(), R.raw.oniowa);
                    mMediaPlayer.start();
        // TODO Auto-generated method stub
         }
               break;
    }}

Moreover to reduce the line of codes instead of swith case you can use if else to achive the same functionality with less code.

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