如何覆盖 ExoPlayer 按钮的操作

Question

我为 ExoPlayer 按钮创建了布局

***
<ImageButton
                android:id="@id/exo_play"
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:onClick="onPlayClick"
                android:background="@drawable/btn_play" />

            <ImageButton
                android:id="@id/exo_pause"
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:onClick="onPauseClick"
                android:background="@drawable/btn_pause" />
***

我的程序中有一个从 PlayerActivity 启动和停止的程序。如何让EcxoPlayer中点击暂停按钮时服务停止，点击播放时服务重启？

代码 PlayerActivity

public class PlayerActivity extends AppCompatActivity {

    private int id;
    private String title;
    private String autor;
    private String file;
    private String img;

    private String MAYBE_ACTION = "MAYBE_ACTION";
    static boolean isPlay = false;
    ImageButton btnPLayPause;
    private TextView txtRadio;
    private TextView txtTitle;
    private RoundedImageView imgRadio;

    private ImageButton exo_pause;
    private ImageButton exo_play;

    private String internetStatus = "";

    BroadcastReceiver br;
    BroadcastReceiver serviceReceiver;
    public final static String SERVICE_PARAM = "param";
    public final static int SERVICE_STATUS = 0;
    public final static String BROADCAST_ACTION = "ru.myapps";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_player);

        id = getIntent().getExtras().getInt("id");
        title = getIntent().getExtras().getString("title");
        autor = getIntent().getExtras().getString("autor");
        file = "link";
        img = getIntent().getExtras().getString("img");

        RadioPlayer.simpleExoPlayerView = new SimpleExoPlayerView(this);
        RadioPlayer.simpleExoPlayerView = (SimpleExoPlayerView) findViewById(R.id.player);

        btnPLayPause = (ImageButton) findViewById(R.id.btnPLayPause);
        txtRadio = (TextView) findViewById(R.id.txtRadio);
        imgRadio = (RoundedImageView) findViewById(R.id.imgRadio);

        exo_pause = (ImageButton) findViewById(R.id.exo_pause);
        exo_play = (ImageButton) findViewById(R.id.exo_play);

        setTitle(title);
        txtRadio.setText(title);

        br = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                finish();
            }
        };
        IntentFilter intentFilter = new IntentFilter(MAYBE_ACTION);
        registerReceiver(br, intentFilter);

        if (NetworkUtil.getConnectivityStatus(this) != 0) {
            startPlayerService();

            exo_pause.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    if (isPlay) {
                        stopPlayerService();

                    }
                }
            });

            exo_play.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    if (NetworkUtil.getConnectivityStatus(PlayerActivity.this) != 0 ) {
                        if (!isPlay) {
                            startPlayerService();

                        }
                    }
                }
            });

        }
    }

    @Override
    protected void onStart() {
        super.onStart();
    }

    public void startPlayerService() {
        Intent serviceIntent = new Intent(PlayerActivity.this, PlayerService.class);
        serviceIntent.putExtra(PlayerService.KEY_STREAM, file);
        serviceIntent.putExtra(PlayerService.KEY_RADIO, title);
        serviceIntent.setAction(PlayerConstants.ACTION.STARTFOREGROUND_ACTION);
        startService(serviceIntent);
        isPlay = true;
        btnPLayPause.setImageResource(R.drawable.icon_stop);
        exo_pause.setVisibility(View.VISIBLE);
        exo_play.setVisibility(View.GONE);
    }

    private void stopPlayerService() {
        Intent serviceIntent = new Intent(PlayerActivity.this, PlayerService.class);
        serviceIntent.setAction(PlayerConstants.ACTION.STOPFOREGROUND_ACTION);
        stopService(serviceIntent);
        isPlay = false;
        btnPLayPause.setImageResource(R.drawable.icon_play);
        exo_pause.setVisibility(View.GONE);
        exo_play.setVisibility(View.VISIBLE);
    }

    private BroadcastReceiver NetworkChangeReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            internetStatus = NetworkUtil.getConnectivityStatusString(context);
            //Toast.makeText(context, internetStatus, Toast.LENGTH_LONG).show();
        }
    };

    @Override
    protected void onResume() {
        super.onResume();

        serviceReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                int serviceStatus = intent.getIntExtra(SERVICE_PARAM, 0);

                if (serviceStatus == SERVICE_STATUS) {
                    btnPLayPause.setImageResource(R.drawable.icon_play);
                }
            }
        };

        IntentFilter filter = new IntentFilter(BROADCAST_ACTION);
        registerReceiver(serviceReceiver, filter);

        registerReceiver(NetworkChangeReceiver, new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE"));
        registerReceiver(NetworkChangeReceiver, new IntentFilter("android.net.wifi.WIFI_STATE_CHANGED"));
    }

    @Override
    protected void onStop() {
        super.onStop();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (NetworkChangeReceiver != null) unregisterReceiver(NetworkChangeReceiver);
        unregisterReceiver(br);
        unregisterReceiver(serviceReceiver);
    }
}

我尝试在 onresume 中实现按钮的操作，但是当我暂停服务时它停止并且播放按钮不播放

Answer 1

你的OnClickListener 应该是OnCreate，试试这个并告诉我：

public class PlayerActivity extends AppCompatActivity {

private int id;
private String title;
private String autor;
private String file;
private String img;

private String MAYBE_ACTION = "MAYBE_ACTION";
static boolean isPlay = false;
ImageButton btnPLayPause;
private TextView txtRadio;
private TextView txtTitle;
private RoundedImageView imgRadio;
private SimpleExoPlayerView simpleExoPlayerView;
private SimpleExoPlayer player;

private ImageButton exo_pause;
private ImageButton exo_play;

public static String LOG_TAG = "my_log";
private String internetStatus = "";

BroadcastReceiver br;

BroadcastReceiver serviceReceiver;
private AsyncTask jsonTask;


public final static String SERVICE_PARAM = "param";

public final static int SERVICE_STATUS = 0;

public final static String BROADCAST_ACTION = "ru.myapps";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_player);

    id = getIntent().getExtras().getInt("id");
    title = getIntent().getExtras().getString("title");
    autor = getIntent().getExtras().getString("autor");
    file = "link_mp3_files";
    img = getIntent().getExtras().getString("img");

    RadioPlayer.simpleExoPlayerView = new SimpleExoPlayerView(this);
    RadioPlayer.simpleExoPlayerView = (SimpleExoPlayerView) findViewById(R.id.player);

    btnPLayPause = (ImageButton) findViewById(R.id.btnPLayPause);
    txtRadio = (TextView) findViewById(R.id.txtRadio);
    imgRadio = (RoundedImageView) findViewById(R.id.imgRadio);

    exo_pause = (ImageButton) findViewById(R.id.exo_pause);
    exo_play = (ImageButton) findViewById(R.id.exo_play);

    setTitle(title);
    txtRadio.setText(title);

    if (NetworkUtil.getConnectivityStatus(this) != 0) {
        startPlayerService();
    }

    exo_pause.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (!isPlay) {
                stopPlayerService();

            }
        }
    });

    exo_play.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (NetworkUtil.getConnectivityStatus(PlayerActivity.this) != 0 ) {
                if (isPlay) {
                    startPlayerService();                        

                }
            } 
        }
    });

    br = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            finish();
        }
    };

    IntentFilter intentFilter = new IntentFilter(MAYBE_ACTION);

    registerReceiver(br, intentFilter);

}

@Override
protected void onStart() {
    super.onStart();
}

public void startPlayerService() {
    Intent serviceIntent = new Intent(PlayerActivity.this, PlayerService.class);
    serviceIntent.putExtra(PlayerService.KEY_STREAM, file);
    serviceIntent.putExtra(PlayerService.KEY_RADIO, title);
    serviceIntent.setAction(PlayerConstants.ACTION.STARTFOREGROUND_ACTION);
    startService(serviceIntent);
    isPlay = true;
    btnPLayPause.setImageResource(R.drawable.icon_stop);

    if(exo_play.getVisibility() == View.VISIBLE) {  
       exo_play.setVisibility(View.GONE); 
       exo_pause.setVisibility(View.VISIBLE);

    }
}

private void stopPlayerService() {
    Intent serviceIntent = new Intent(PlayerActivity.this, PlayerService.class);
    serviceIntent.setAction(PlayerConstants.ACTION.STOPFOREGROUND_ACTION);
    stopService(serviceIntent);
    isPlay = false;
    btnPLayPause.setImageResource(R.drawable.icon_play);

    if(exo_pause.getVisibility() == View.VISIBLE) { 
        exo_pause.setVisibility(View.GONE);
        exo_play.setVisibility(View.VISIBLE);
    }
}

private BroadcastReceiver NetworkChangeReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        internetStatus = NetworkUtil.getConnectivityStatusString(context);
        //Toast.makeText(context, internetStatus, Toast.LENGTH_LONG).show();
    }
};

@Override
protected void onResume() {
    super.onResume();

    serviceReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            int serviceStatus = intent.getIntExtra(SERVICE_PARAM, 0);
            if (serviceStatus == SERVICE_STATUS) {
                btnPLayPause.setImageResource(R.drawable.icon_play);
            }
        }
    };

    IntentFilter filter = new IntentFilter(BROADCAST_ACTION);
    registerReceiver(serviceReceiver, filter);

    registerReceiver(NetworkChangeReceiver, new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE"));
    registerReceiver(NetworkChangeReceiver, new IntentFilter("android.net.wifi.WIFI_STATE_CHANGED"));
}

@Override
protected void onStop() {
    super.onStop();
}

@Override
protected void onDestroy() {
    super.onDestroy();

    if (NetworkChangeReceiver != null) unregisterReceiver(NetworkChangeReceiver);
    unregisterReceiver(br);
    unregisterReceiver(serviceReceiver);
}

}

在OnResume 中，您可以检查它是否正在运行，如果您愿意，可以将其挂起。

您的问题是，当exo_play 被点击时，您从未调用过startPlayerService();。请参阅exo_play.setOnClickListener。我还删除了 else 语句，因为它是不必要的。