我也遇到了这个带有复选框功能的错误。没有产生错误，但功能显示我的代码未被访问或未正确读取。
以下是我要解决的具体代码段：
public void onStart(){
super.onStart();
final RadioButton softLoud = (RadioButton) findViewById(R.id.low_to_high_radioButton);
final RadioButton loudSoft = (RadioButton) findViewById(R.id.high_to_low_radioButton);
final RadioButton verbalCommand = (RadioButton) findViewById(R.id.step_voice_radioButton);
final MediaPlayer mediaPlayer = new MediaPlayer();
if (verbalCommand.isChecked()){
verbalCommand.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (mediaPlayer.isPlaying()) {
mediaPlayer.stop();
}
try {
mediaPlayer.reset();
AssetFileDescriptor assetFileDescriptor;
//Change mp3 file using voice recorder when ready
assetFileDescriptor = getAssets().openFd("Noise.mp3");
mediaPlayer.setDataSource(assetFileDescriptor.getFileDescriptor(),
assetFileDescriptor.getStartOffset(),
assetFileDescriptor.getLength());
mediaPlayer.prepare();
mediaPlayer.start();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
} else if(softLoud.isChecked()){
softLoud.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
ToneGenerator toneG = new ToneGenerator(AudioManager.STREAM_ALARM, 50);
toneG.startTone(ToneGenerator.TONE_CDMA_ALERT_CALL_GUARD, 200);
}
});
}
}
我的想法是我有三个单选按钮（这里只显示两个）按钮调用一个自记录的.mp3文件，另一个创建一个增加音量的蜂鸣声模式（音量增加未显示因为我觉得这个问题需要先解决，我正在研究目前的延误。当应用程序运行时，只执行一个if语句，例如，如果我先点击蜂鸣声，它将始终发出蜂鸣声，但录音将不起作用，反之亦然。 此外，它应该在onStart，onCreate还是onResume？
以下是完整的活动：
public class AudioActivity extends AppCompatActivity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_audio);
//load preferred values
loadPrefs();
//Once audio is checked press ok button to return to feedback activity
//initialize the radio buttons
final RadioButton softLoud = (RadioButton) findViewById(R.id.low_to_high_radioButton);
final RadioButton loudSoft = (RadioButton) findViewById(R.id.high_to_low_radioButton);
final RadioButton verbalCommand = (RadioButton) findViewById(R.id.step_voice_radioButton);
Button audioOkButton = (Button) findViewById(R.id.audio_ok);
if (audioOkButton != null && (softLoud.isChecked() || loudSoft.isChecked() || verbalCommand.isChecked())) {
audioOkButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(AudioActivity.this, FeedbackActivity.class);
startActivity(intent);
}
});
} else if (audioOkButton != null && !(softLoud.isChecked() || loudSoft.isChecked() || verbalCommand.isChecked())) {
audioOkButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
showSimplePopUp();
}
});
}
//function call to have a response when button clicked
CompoundButton.OnCheckedChangeListener checker = new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
//save button preference
savePrefs("softLoudAudio", softLoud.isChecked());
savePrefs("loudSoftAudio", loudSoft.isChecked());
savePrefs("verbalCommandAudio", verbalCommand.isChecked());
}
};
softLoud.setOnCheckedChangeListener(checker);
loudSoft.setOnCheckedChangeListener(checker);
verbalCommand.setOnCheckedChangeListener(checker);
}
private void loadPrefs() {
RadioButton softLoud = (RadioButton) findViewById(R.id.low_to_high_radioButton);
RadioButton loudSoft = (RadioButton) findViewById(R.id.high_to_low_radioButton);
RadioButton verbalCommand = (RadioButton) findViewById(R.id.step_voice_radioButton);
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
//Creates a cache with default value of false
boolean softLoudValue = sp.getBoolean("softLoudAudio", false);
boolean loudSoftValue = sp.getBoolean("loudSoftAudio", false);
boolean verbalCommandValue = sp.getBoolean("verbalCommandAudio", false);
if(softLoudValue){
softLoud.setChecked(true);
}else if(loudSoftValue){
loudSoft.setChecked(true);
}else if(verbalCommandValue){
verbalCommand.setChecked(true);
}else{
softLoud.setChecked(false);
loudSoft.setChecked(false);
verbalCommand.setChecked(false);
}
}
private void savePrefs(String key, boolean value) {
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor edit = sp.edit();
edit.putBoolean(key, value);
edit.commit();
}
private void showSimplePopUp() {
AlertDialog.Builder helpBuilder = new AlertDialog.Builder(this);
helpBuilder.setTitle(R.string.oops);
helpBuilder.setMessage(R.string.error_message);
helpBuilder.setPositiveButton(R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Do nothing but close the dialog
}
});
// Remember, create doesn't show the dialog
AlertDialog helpDialog = helpBuilder.create();
helpDialog.show();
}
public void onStart(){
super.onStart();
final RadioButton softLoud = (RadioButton) findViewById(R.id.low_to_high_radioButton);
final RadioButton loudSoft = (RadioButton) findViewById(R.id.high_to_low_radioButton);
final RadioButton verbalCommand = (RadioButton) findViewById(R.id.step_voice_radioButton);
final MediaPlayer mediaPlayer = new MediaPlayer();
if (verbalCommand.isChecked()){
verbalCommand.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (mediaPlayer.isPlaying()) {
mediaPlayer.stop();
}
try {
mediaPlayer.reset();
AssetFileDescriptor assetFileDescriptor;
//Change mp3 file using voice recorder when ready
assetFileDescriptor = getAssets().openFd("Noise.mp3");
mediaPlayer.setDataSource(assetFileDescriptor.getFileDescriptor(),
assetFileDescriptor.getStartOffset(),
assetFileDescriptor.getLength());
mediaPlayer.prepare();
mediaPlayer.start();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
} else if(softLoud.isChecked()){
softLoud.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
ToneGenerator toneG = new ToneGenerator(AudioManager.STREAM_ALARM, 50);
toneG.startTone(ToneGenerator.TONE_CDMA_ALERT_CALL_GUARD, 200);
}
});
}
}
}
答案 0 :(得分：0)
不确定为什么，但我只使用一个onClick方法修复了问题，而不是我发布的两个：
public void onStart() {
super.onStart();
final RadioButton softLoud = ((RadioButton) this.findViewById(R.id.low_to_high_radioButton));
final RadioButton loudSoft = (RadioButton) this.findViewById(R.id.high_to_low_radioButton);
final RadioButton verbalCommand = (RadioButton) this.findViewById(R.id.step_voice_radioButton);
softLoud.setOnClickListener(this);
verbalCommand.setOnClickListener(this);
loudSoft.setOnClickListener(this);
}
public void onClick(View view) {
final MediaPlayer mediaPlayer = new MediaPlayer();
int id = view.getId();
if (id == R.id.step_voice_radioButton) {
if (mediaPlayer.isPlaying()) {
mediaPlayer.stop();
}
try {
mediaPlayer.reset();
AssetFileDescriptor assetFileDescriptor;
//Change mp3 file using voice recorder when ready
assetFileDescriptor = getAssets().openFd("Noise.mp3");
mediaPlayer.setDataSource(assetFileDescriptor.getFileDescriptor(),
assetFileDescriptor.getStartOffset(),
assetFileDescriptor.getLength());
mediaPlayer.prepare();
mediaPlayer.start();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
} else if (id == R.id.low_to_high_radioButton) {
if (mediaPlayer.isPlaying()) {
mediaPlayer.stop();
}
ToneGenerator toneG = new ToneGenerator(AudioManager.STREAM_ALARM, 50);
toneG.startTone(ToneGenerator.TONE_CDMA_ALERT_CALL_GUARD, 700);
} else if(id == R.id.high_to_low_radioButton) {
if (mediaPlayer.isPlaying()) {
mediaPlayer.stop();
}
ToneGenerator tones = new ToneGenerator(AudioManager.STREAM_ALARM, 100);
tones.startTone(ToneGenerator.TONE_CDMA_ALERT_CALL_GUARD, 1000);
}
}