Question

我正在尝试在单个Activity中实现多个搜索栏

Filters.java

public class Filters extends Activity implements OnSeekBarChangeListener{
    private SeekBar PRICEbar,DISTANCEbar, RATINGbar; // declare seekbar object variable
    // declare text label objects
    private TextView PRICEtextProgress,DISTANCEtextProgress, RATINGtextProgress;
    /** 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); // set seekbar listener.
        // since we are using this class as the listener the class is "this"

        // make text label for progress value
        PRICEtextProgress = (TextView)findViewById(R.id.PRICEtextViewProgressID);
        // make text label for action
        //textAction = (TextView)findViewById(R.id.textViewAction);


        ////////////////////////////////////////////////////////
        DISTANCEbar = (SeekBar)findViewById(R.id.DISTANCEseekBarID); // make seekbar object
        DISTANCEbar.setOnSeekBarChangeListener(this);
        DISTANCEtextProgress = (TextView)findViewById(R.id.DISTANCEtextViewProgressID);

        ////////////////////////////////////////////////////////
        RATINGbar = (SeekBar)findViewById(R.id.RATINGseekBarID); // make seekbar object
        RATINGbar.setOnSeekBarChangeListener(this);
        RATINGtextProgress = (TextView)findViewById(R.id.RATINGtextViewProgressID);



    }

    @Override
    public void onProgressChanged(SeekBar seekBar, int progress,
            boolean fromUser) {
        // TODO Auto-generated method stub

        // change progress text label with current seekbar value
        PRICEtextProgress.setText("Price:: Rs "+progress);
        // change action text label to changing
        //textAction.setText("changing");

        DISTANCEtextProgress.setText("Distance:: "+progress);

        RATINGtextProgress.setText("Rating:: "+progress);



    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub
        //textAction.setText("starting to track touch");

    }

    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub
        seekBar.setSecondaryProgress(seekBar.getProgress());
        //textAction.setText("ended tracking touch");       
    }

}

filters.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <RelativeLayout
        android:id="@+id/relativeLayoutforPRICE"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/PRICEtextViewProgressID"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:text="Price"
            android:textAppearance="?android:attr/textAppearanceLarge" >
        </TextView>

        <SeekBar
            android:id="@+id/PRICEseekBarID"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_below="@+id/textView1"
            android:layout_marginTop="26dp"
            android:max="100" >
        </SeekBar>
    </RelativeLayout>

    <View
        android:layout_width="fill_parent"
        android:layout_height="1dp"
        android:background="@android:color/black" />

    <RelativeLayout
        android:id="@+id/relativeLayoutforDISTANCE"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/DISTANCEtextViewProgressID"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:text="DISTANCE"
            android:textAppearance="?android:attr/textAppearanceLarge" >
        </TextView>

        <SeekBar
            android:id="@+id/DISTANCEseekBarID"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_below="@+id/textView1"
            android:layout_marginTop="26dp"
            android:max="100" >
        </SeekBar>
    </RelativeLayout>

    <View
        android:layout_width="fill_parent"
        android:layout_height="1dp"
        android:background="@android:color/black" />

    <RelativeLayout
        android:id="@+id/relativeLayoutforRATING"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/RATINGtextViewProgressID"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:text="Rating"
            android:textAppearance="?android:attr/textAppearanceLarge" >
        </TextView>

        <SeekBar
            android:id="@+id/RATINGseekBarID"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_below="@+id/textView1"
            android:layout_marginTop="26dp"
            android:max="100" >
        </SeekBar>
    </RelativeLayout>

</LinearLayout>

enter image description here

我们可以清楚地知道无论哪个搜索栏都改变了所有的价值立刻改变
我该如何解决这个问题？
另外，如何让评分搜索栏接受( 1,2,3,4,5 )之类的值而不是(1234..100)

有什么想法吗？

Answer 1

当值改变时，所有SeekBars都在同一个对象（this）上调用相同的方法。你可以做两件事：

在您的处理程序方法中，检查哪个SeekBar触发了调用。

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

您也可以使用内联匿名类

public class Filters extends Activity {  //Remove implements OnSeekBarChangeListener

...

@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    // load the layout
    setContentView(R.layout.filters);

    // make text label for progress value
    PRICEtextProgress = (TextView)findViewById(R.id.PRICEtextViewProgressID);
    PRICEbar = (SeekBar)findViewById(R.id.PRICEseekBarID); // make seekbar object
    PRICEbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            PRICEtextProgress.setText("Price:: Rs "+progress);
        }
    });


    ////////////////////////////////////////////////////////
    DISTANCEtextProgress = (TextView)findViewById(R.id.DISTANCEtextViewProgressID);
    DISTANCEbar = (SeekBar)findViewById(R.id.DISTANCEseekBarID); // make seekbar object
    DISTANCEbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            DISTANCEtextProgress.setText("Distance:: "+progress);
        }
    });



    ////////////////////////////////////////////////////////
    RATINGtextProgress = (TextView)findViewById(R.id.RATINGtextViewProgressID);
    RATINGbar = (SeekBar)findViewById(R.id.RATINGseekBarID); // make seekbar object
    RATINGbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener {
        @Override
        public void onProgressChanged(
            SeekBar seekBar, int progress, boolean fromUser) {
            RATINGtextProgress.setText("Rating:: "+progress);
        }
    });
}

最后，您可以使用seekBar.setMax（int）将搜索栏的最大值限制为5。

android中的简单搜索栏

我正在尝试在单个Activity中实现多个搜索栏

1 个答案: