#java #android
#java #Android
Вопрос:
вот код
import androidx.fragment.app.Fragment;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.widget.Button;
import android.os.Bundle;
import android.widget.SeekBar;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.TextView;
import java.io.IOException;
public class fragment1 extends Fragment {
MediaPlayer mp;
Button play;
SeekBar seekBar;
TextView elapsedTimeLabel;
TextView remainingTimeLabel;
int totalTime;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_fragment1, container, false);
final MediaPlayer mp = new MediaPlayer();
mp.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
mp.setDataSource("https://firebasestorage.googleapis.com");
} catch (IOException e) {
e.printStackTrace();
}
try {
mp.prepare();
} catch (IOException e) {
e.printStackTrace();
}
final Button play = rootView.findViewById(R.id.play);
elapsedTimeLabel = rootView.findViewById(R.id.elapsedTimeLabel);
remainingTimeLabel = rootView.findViewById(R.id.remainingTimeLabel);
totalTime = mp.getDuration();
mp.seekTo(0);
seekBar = rootView.findViewById(R.id.seekBar);
seekBar.setMax(totalTime);
seekBar.setOnSeekBarChangeListener
(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (fromUser) {
mp.seekTo(progress);
seekBar.setProgress(progress);
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
}
);
new Thread(new Runnable() {
@Override
public void run() {
while (mp != null) {
try {
Message msg = new Message();
msg.what = mp.getCurrentPosition();
handler.sendMessage(msg);
Thread.sleep(1000);
} catch (InterruptedException ignored) {
}
}
}
}).start();
mp.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
public void onCompletion(MediaPlayer sound) {
play.setBackgroundResource(R.drawable.play);
}
});
play.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (mp.isPlaying()) {
mp.pause();
play.setBackgroundResource(R.drawable.play);
if (mp != null) {
mp.release();
}
} else {
mp.start();
play.setBackgroundResource(R.drawable.pause);
}
}
});
return rootView;
}
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
int currentPosition = msg.what;
seekBar.setProgress(currentPosition);
String elapsedTime = createTimeLabel(currentPosition);
elapsedTimeLabel.setText(elapsedTime);
String remainingTime;
remainingTime = createTimeLabel(totalTime - currentPosition);
remainingTimeLabel.setText("-" remainingTime);
}
};
public String createTimeLabel(int time) {
String timelabel;
int min = time / 1000 / 60;
int sec = time / 1000 % 60;
timelabel = min ":";
if (sec < 10) timelabel = "0";
timelabel = sec;
return timelabel;
}
public void play(View view) {
if (mp == null) {
mp.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
stopPlayer();
}
});
}
mp.start();
}
public void pause(View view) {
if (mp != null) {
mp.pause();
}
}
private void stopPlayer() {
if (mp != null) {
mp.release();
mp = null;
}
}
}
вот logcat
2020-10-02 10:06:04.763 9225-9225/? I/xample.raamatt: Not late-enabling -Xcheck:jni (already on)
2020-10-02 10:06:04.806 9225-9225/? I/xample.raamatt: Unquickening 12 vdex files!
2020-10-02 10:06:04.807 9225-9225/? W/xample.raamatt: Unexpected CPU variant for X86 using defaults: x86
2020-10-02 10:06:04.976 9225-9225/com.example.raamattu D/NetworkSecurityConfig: No Network Security Config specified, using platform default
2020-10-02 10:06:04.978 9225-9225/com.example.raamattu D/NetworkSecurityConfig: No Network Security Config specified, using platform default
2020-10-02 10:06:05.014 9225-9249/com.example.raamattu D/libEGL: loaded /vendor/lib/egl/libEGL_emulation.so
2020-10-02 10:06:05.022 9225-9249/com.example.raamattu D/libEGL: loaded /vendor/lib/egl/libGLESv1_CM_emulation.so
2020-10-02 10:06:05.028 9225-9249/com.example.raamattu D/libEGL: loaded /vendor/lib/egl/libGLESv2_emulation.so
2020-10-02 10:06:05.255 9225-9225/com.example.raamattu W/xample.raamatt: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (greylist, reflection, allowed)
2020-10-02 10:06:05.255 9225-9225/com.example.raamattu W/xample.raamatt: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (greylist, reflection, allowed)
2020-10-02 10:06:05.469 9225-9247/com.example.raamattu D/HostConnection: HostConnection::get() New Host Connection established 0xf3094410, tid 9247
2020-10-02 10:06:05.473 9225-9247/com.example.raamattu D/HostConnection: HostComposition ext ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_native_sync_v2 ANDROID_EMU_native_sync_v3 ANDROID_EMU_native_sync_v4 ANDROID_EMU_dma_v1 ANDROID_EMU_direct_mem ANDROID_EMU_host_composition_v1 ANDROID_EMU_host_composition_v2 ANDROID_EMU_vulkan ANDROID_EMU_deferred_vulkan_commands ANDROID_EMU_vulkan_null_optional_strings ANDROID_EMU_vulkan_create_resources_with_requirements ANDROID_EMU_YUV_Cache ANDROID_EMU_async_unmap_buffer ANDROID_EMU_vulkan_ignored_handles ANDROID_EMU_vulkan_free_memory_sync GL_OES_EGL_image_external_essl3 GL_OES_vertex_array_object GL_KHR_texture_compression_astc_ldr ANDROID_EMU_gles_max_version_3_0
2020-10-02 10:06:05.476 9225-9247/com.example.raamattu W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
2020-10-02 10:06:05.479 9225-9247/com.example.raamattu D/EGL_emulation: eglCreateContext: 0xf2ea8330: maj 3 min 0 rcv 3
2020-10-02 10:06:05.525 9225-9247/com.example.raamattu D/EGL_emulation: eglMakeCurrent: 0xf2ea8330: ver 3 0 (tinfo 0xf31f4690) (first time)
2020-10-02 10:06:05.558 9225-9247/com.example.raamattu I/Gralloc4: mapper 4.x is not supported
2020-10-02 10:06:05.559 9225-9247/com.example.raamattu D/HostConnection: createUnique: call
2020-10-02 10:06:05.559 9225-9247/com.example.raamattu D/HostConnection: HostConnection::get() New Host Connection established 0xf30933f0, tid 9247
2020-10-02 10:06:05.560 9225-9247/com.example.raamattu D/goldfish-address-space: allocate: Ask for block of size 0x100
2020-10-02 10:06:05.560 9225-9247/com.example.raamattu D/goldfish-address-space: allocate: ioctl allocate returned offset 0x3fc0a8000 size 0x2000
2020-10-02 10:06:05.591 9225-9247/com.example.raamattu D/HostConnection: HostComposition ext ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_native_sync_v2 ANDROID_EMU_native_sync_v3 ANDROID_EMU_native_sync_v4 ANDROID_EMU_dma_v1 ANDROID_EMU_direct_mem ANDROID_EMU_host_composition_v1 ANDROID_EMU_host_composition_v2 ANDROID_EMU_vulkan ANDROID_EMU_deferred_vulkan_commands ANDROID_EMU_vulkan_null_optional_strings ANDROID_EMU_vulkan_create_resources_with_requirements ANDROID_EMU_YUV_Cache ANDROID_EMU_async_unmap_buffer ANDROID_EMU_vulkan_ignored_handles ANDROID_EMU_vulkan_free_memory_sync GL_OES_EGL_image_external_essl3 GL_OES_vertex_array_object GL_KHR_texture_compression_astc_ldr ANDROID_EMU_gles_max_version_3_0
2020-10-02 10:06:10.546 9225-9225/com.example.raamattu W/MediaPlayer: Use of stream types is deprecated for operations other than volume control
2020-10-02 10:06:10.546 9225-9225/com.example.raamattu W/MediaPlayer: See the documentation of setAudioStreamType() for what to use instead with android.media.AudioAttributes to qualify your playback use case
2020-10-02 10:06:10.549 9225-9225/com.example.raamattu V/MediaHTTPService: MediaHTTPService(android.media.MediaHTTPService@13a9e9e): Cookies: null
2020-10-02 10:06:10.555 9225-9243/com.example.raamattu V/MediaHTTPService: makeHTTPConnection: CookieManager created: java.net.CookieManager@e7ddd7f
2020-10-02 10:06:10.556 9225-9243/com.example.raamattu V/MediaHTTPService: makeHTTPConnection(android.media.MediaHTTPService@13a9e9e): cookieHandler: java.net.CookieManager@e7ddd7f Cookies: null
2020-10-02 10:06:11.761 9225-9225/com.example.raamattu I/Choreographer: Skipped 75 frames! The application may be doing too much work on its main thread.
2020-10-02 10:06:11.828 9225-9247/com.example.raamattu I/OpenGLRenderer: Davey! duration=1330ms; Flags=0, IntendedVsync=756529359630, Vsync=757779359580, OldestInputEvent=9223372036854775807, NewestInputEvent=0, HandleInputStart=757794169300, AnimationStart=757794219600, PerformTraversalsStart=757794530400, DrawStart=757808726500, SyncQueued=757811526300, SyncStart=757813102200, IssueDrawCommandsStart=757814731200, SwapBuffers=757858684100, FrameCompleted=757861165100, DequeueBufferDuration=693000, QueueBufferDuration=1043000, GpuCompleted=0,
2020-10-02 10:06:17.219 9225-9225/com.example.raamattu V/MediaPlayer: resetDrmState: mDrmInfo=null mDrmProvisioningThread=null mPrepareDrmInProgress=false mActiveDrmScheme=false
2020-10-02 10:06:17.219 9225-9225/com.example.raamattu V/MediaPlayer: cleanDrmObj: mDrmObj=null mDrmSessionId=null
2020-10-02 10:06:17.236 9225-9225/com.example.raamattu W/MediaPlayer: mediaplayer went away with unhandled events
2020-10-02 10:06:17.772 9225-9258/com.example.raamattu E/AndroidRuntime: FATAL EXCEPTION: Thread-2
Process: com.example.raamattu, PID: 9225
java.lang.IllegalStateException
at android.media.MediaPlayer.getCurrentPosition(Native Method)
at com.example.raamattu.fragment1$2.run(fragment1.java:77)
at java.lang.Thread.run(Thread.java:923)
2020-10-02 10:06:22.894 9225-9241/com.example.raamattu W/System: A resource failed to call release.
итак, проблема в том, что приложение вылетает при нажатии на паузу
строка 77 — это msg.what = mp.getCurrentPosition();
я был бы очень признателен, если бы кто-нибудь дал мне пример фрагмента кода, который я должен добавить, чтобы заставить приложение работать.
Комментарии:
1. сбой происходит из-за того, что вы получаете исключение IllegalStateException, пожалуйста, убедитесь, что ваш медиаплеер находится в запущенном состоянии, прежде чем вызывать stop или pause на нем
2. @Jayanth. спасибо за ответ. извините, я ничего не знаю о кодировании. можете ли вы привести мне пример того, что я должен изменить?
3. конечно, пожалуйста, обратитесь к этой ссылке для использования MediaPlayer tutorialspoint.com/android/android_mediaplayer.htm
Ответ №1:
Удалить .release() в
@Override
public void onClick(View view) {
if (mp.isPlaying()) {
mp.pause();
play.setBackgroundResource(R.drawable.play);
//if (mp != null) {
//mp.release();
//}
} else {
mp.start();
play.setBackgroundResource(R.drawable.pause);
}
}
Вы должны .release() проигрывать, когда выполняете всю работу с ним или когда фрагмент / действие уничтожается