java - 如何将字符串从 EditText 转换为字符数组，以允许音频实现？

Question

这是我的代码:

package com.example.pembroke.finalalgorhythmic;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {


Button asdf;

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

    asdf = (Button) findViewById(R.id.keybutton);
    asdf.setOnClickListener(MainActivity.this);


}

@Override
public void onClick(View v) {
    EditText keyInput = (EditText) findViewById(R.id.key);
    String notes = keyInput.getText().toString();

}

我想要做的是创建一个字符数组，以便我可以在单击按钮后使用媒体播放器类根据用户输入播放某些声音。有什么想法吗？

Answer 1

你试过吗

notes.toCharArray() 还没？

编辑:长版本

编辑2:示例实现

MediaPlayer mp;
char[] currentNotes;
int noteIndex;
// Create the mp in onCreate and register your onCompletion callback

@Override
public void onClick(View v) {
    EditText keyInput = (EditText) findViewById(R.id.key);
    String notes = keyInput.getText().toString();
    currentNotes = notes.toCharArray();
    noteIndex = 0;
    mp.setDataSource(getNoteResource(currentNotes[0]));
    mp.start();
}

// Convert tone values into 
public int getNoteResource(char tone) {…}

@Override
public void onCompletion(MediaPlayer mp) {
    if(++noteIndex < currentNotes.length) {
        mp.setDataSource(getNoteResource(currentNotes[noteIndex]));
        mp.start();
    }
}