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這是我的第一款Android/Java應用程序。我使用的第一個答案here嘗試主動重複任務,更新搜索條(「時間滑條」),以顯示作爲音頻文件的播放進度。這裏是我的代碼(刪除了一些不相關的行):的Android的Java:更新搜索條顯示進度音頻文件播放
private int timeSliderInterval = 1000; // 1 second
private Handler timeSliderHandler;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_play);
Intent intent = getIntent();
Runnable doUpdateTimeSlider = new Runnable() {
@Override
public void run() {
timeSliderHandler.postDelayed(doUpdateTimeSlider, timeSliderInterval);
updateTimeSlider();
}
};
void startUpdateTimeSlider() {
doUpdateTimeSlider.run();
}
void stopUpdateTimeSlider() {
timeSliderHandler.removeCallbacks(doUpdateTimeSlider);
}
final SeekBar timeSlider = (SeekBar) findViewById(R.id.timeSlider);
if (timeSlider != null) {
timeSliderHandler = new Handler();
startUpdateTimeSlider();
}
@Override
public void onDestroy() {
super.onDestroy();
stopUpdateTimeSlider();
}
該項目不顯示在模擬器中。工具提示顯示這些錯誤:
此外,startUpdateTimeSlider
和stopUpdateTimeSlider
功能都出現了這個錯誤提示:
此外,在運行窗口中,我越來越:
emulator: emulator window was out of view and was recentered
emulator: ERROR: _factory_client_recv: Unknown camera factory query name in ' '
任何幫助將不勝感激!
您精確定位體現在這些錯誤的問題。謝謝!我不完全走出險境,很遺憾。我創建了一個新的問題:http://stackoverflow.com/questions/41414330/android-java-cannot-resolve-in-postdelayed – user1147171
首先,新問題的意見是正確的答案 –