android - Android中如何设置第一个Seekbar进程值就是给第二个Seekbar赋初值？

Question

我有两个搜索栏。我想设置第一个Seekbar的过程值就是给第二个Seekbar赋初值。我的确切要求是，我想用三个 seekbar 覆盖 0 到 100。例如:如果 FirstSeekBar 覆盖 1 到 30，第二个 SeekBar 自动从 30 到 100 开始。如果我在第二个 seekbar 中设置过程值 60，第三个 Seekbar 自动从 60 到 100 开始。请帮我解决这个问题。

activity.xml

<SeekBar
    android:id="@+id/firstSeekBar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="30dp"/>
<SeekBar
    android:id="@+id/secondSeekBar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="10dp" />
<SeekBar
    android:id="@+id/thirdSeekBar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="10dp" />

SeekBarActivity.java

firstSeekBar.setOnSeekBarChangeListener(
            new SeekBar.OnSeekBarChangeListener() {
                int firstPgrValue;
                @Override
                public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                    firstPgrValue = progress;
                    secondSeekBar.setEnabled(true);
                    txtFirstSeek.setText("First (" + progress + " / " + firstSeekBar.getMax() + ")");
                }

                @Override
                public void onStartTrackingTouch(SeekBar seekBar) {
                    shortMessage(MainActivity.this, "Progress Start");
                }

                @Override
                public void onStopTrackingTouch(SeekBar seekBar) {
                    if (firstPgrValue == 0) {
                        secondSeekBar.setEnabled(false);
                        redSeekBar.setEnabled(false);
                    }
                    txtFirstSeek.setText("First (" + firstPgrValue + " / " + firstSeekBar.getMax() + ")");
                    shortMessage(MainActivity.this, "Progress Stopped");
                }
            }
    );

    secondSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        int secondPgrValue;
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            secondPgrValue = progress;
            thirdSeekBar.setEnabled(true);
            txtSecondSeek.setText("Second (" + progress + " / " + secondSeekBar.getMax() + ")");
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            shortMessage(MainActivity.this, "Progress Start");
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
        if (secondPgrValue == 0) {
           thirdSeekBar.setEnabled(false);
        }
            txtSecondSeek.setText("Second (" + secondPgrValue + " / " + secondSeekBar.getMax() + ")");
            shortMessage(MainActivity.this, "Progress Stopped");
        }
    });
thirdSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        int thirdPsrValue;
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            thirdPsrValue = progress;
            txtRedSeek.setText("Third (" + progress + " / " + redSeekBar.getMax() + ")");
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            shortMessage(MainActivity.this, "Progress Start");
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            txtThirdSeek.setText("Third (" + thirdPsrValue + " / " + thirdSeekBar.getMax() + ")");
            shortMessage(MainActivity.this, "Progress Stopped");
        }
    });

Answer 1

不幸的是， Vanilla SeekBar 没有默认的 min 字段。我将此值与不整洁且不方便的 int 字段并行存储。您可以扩展该类，或者像我一样做，但在我看来，您描述的是一种常见情况，许多 RangeBar 实现已经提供了该功能。

My Exact requirement is, I want cover 0 to 100 with three seekbar.Ex : If FirstSeekBar cover 1 to 30 the Second SeekBar automatically starts 30 to 100. if I set process value 60 in second seekbar the Third Seekbar automatically starts 60 to 100.

https://github.com/yahoo/android-range-seek-bar只有两个拇指，应该是理想的。 Others提供无限大拇指。