我的程序应该播放打喷嚏和擤鼻涕的声音。如果点击了打喷嚏声音的按钮,它就会被播放。在此之后,如果设备得到旋转,它应该播放鼻涕声音(反之亦然,为鼻涕按钮)。我一直在尝试使用onSaveInstance和onRestoreInstance,但它们都不起作用。我漏了什么吗?
下面是我目前在主activity上的代码:
package com.example.togglemediaplayer;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
@Override
protected void onSaveInstanceState(@NonNull Bundle outState) {
super.onSaveInstanceState(outState);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final MediaPlayer sneezeSound = MediaPlayer.create(this, R.raw.sneeze2);
final MediaPlayer blowSound = MediaPlayer.create(this, R.raw.blow_nose);
Button sneeze = (Button) this.findViewById(R.id.sneezeButton);
sneeze.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
sneezeSound.start();
}
});
Button blow = (Button) this.findViewById(R.id.blowButton);
blow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
blowSound.start();
}
});
}
}
我还在清单文件android:configchanges=“orientationscreensize”
中添加了配置更改
您可以在此方法中捕获rotate事件
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
Toast.makeText(this, "landscape", Toast.LENGTH_SHORT).show();
} else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){
Toast.makeText(this, "portrait", Toast.LENGTH_SHORT).show();
}
}