java - 从 android 中的 SeekBar 获取值

Question

如何从 SeekBar 获取值？

• 我有一个包含三个 SeekBars (PRICEbar) 的类的代码
• 我想将这些 SeekBar 的值传递给下一个 Activity(屏幕)作为 Intent
• 我知道如何实现 OnClickListener 但我如何提取来自 SeekBars 的值？

ex: 如果 PRICEbar 指向值 10 ... 我需要获取值 10

Filters.java

public class Filters extends Activity implements OnSeekBarChangeListener{

    // declare text objects variables
    private SeekBar PRICEbar; 
    private TextView PRICEtextProgress,DISTANCEtextProgress, RATINGtextProgress;
    Button back;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // load the layout
        setContentView(R.layout.filters);   

        PRICEbar = (SeekBar)findViewById(R.id.PRICEseekBarID); // make seekbar object
        PRICEbar.setOnSeekBarChangeListener(this); 
        PRICEbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
                // TODO Auto-generated method stub
            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {
                // TODO Auto-generated method stub
            }

            @Override
            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {
                // TODO Auto-generated method stub
                PRICEtextProgress = (TextView)findViewById(R.id.PRICEtextViewProgressID);
                PRICEtextProgress.setText("Price:: Rs "+progress);
                seekBar.setMax(100);
            }
        });
    }

    @Override
    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
        if (seekBar == PRICEbar)
            PRICEtextProgress.setText("Price:: Rs "+progress);
    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub
    }
}

Answer 1

SeekBar 类是 ProgressBar 的子类，它包含一个 getProgress()方法。

调用 PRICEbar.getProgress() 将返回您要查找的值。