安卓：按按钮单击显示值的数组一前一后

本文介绍了安卓：按按钮单击显示值的数组一前一后的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 我有12个整数值的数组，我想要显示它一前一后像I have an array of 12 integer values and I want to display it one after the other like最初的应用程序运行，我显示6个值。Initially on application run I am displaying 6 values.按钮点击我要显示的其他6个值逐一on the button click I want to display the other 6 values one by one prevbutton-> 值1 值2 VALUE3 VALUE4 值5 value6 - > Next按钮prevbutton-> value1 value2 value3 value4 value5 value6 -> nextbutton等下一步按钮单击它应该是这样的。so on next button click it should be like this.接下来的6值应显示这样的next 6 values should be displayed like this prevbutton - > 值2 VALUE3 VALUE4 值5 value6 value7 - > Next按钮 prevbutton-> value2 value3 value4 value5 value6 value7 -> nextbutton本应持续到12值和扭转的 prevbutton的情况下，应该发生的。 帮助总是AP preciated，谢谢Help is always appreciated, Thanks我显示前6个值这样的 public void autoTune() { Log.i("autotune", " called"); if (frequency[0] == 0.0) station1.setText(""); else station1.setText("" + frequency[0]); if (frequency[1] == 0.0) station2.setText(""); else station2.setText("" + frequency[1]); if (frequency[2] == 0.0) station3.setText(""); else station3.setText("" + frequency[2]); if (frequency[3] == 0.0) station4.setText(""); else station4.setText("" + frequency[3]); if (frequency[4] == 0.0) station5.setText(""); else station5.setText("" + frequency[4]); if (frequency[5] == 0.0) station6.setText(""); else station6.setText("" + frequency[5]);} @Override protected Boolean doInBackground(Context... params) { // TODO Auto-generated method stub Log.i("in autotune", " before freq length"); int[] freq = { 911, 943, 947, 932, 901, 964, 843, 835, 946,904,908,873,877 }; freqCounter = 0; Log.i("in autotune", "after freq length : " + freq.length); frequency = new double[freq.length]; Log.i("in autotune", "after frequency length : " + frequency.length); for (int k = 0; k < freq.length; k++) { Log.i("In Radio.java", "Freq : " + freq[k]); frequency[k] = freq[k]; frequency[k] = frequency[k] / 10; if (frequency[k] == 0.0) break; freqCounter++; Log.i("In Radio.java", "Frequency : " + frequency[k]); }我曾尝试与该code但这不是在所有工作I have tried with this code but this is not working at all public void forwardtune(){Button[] buttons = new Button[5];buttons[0] = (Button)findViewById(R.id.radiostation1);buttons[1] = (Button)findViewById(R.id.radiostation2);buttons[2] = (Button)findViewById(R.id.radiostation3);buttons[3] = (Button)findViewById(R.id.radiostation4);buttons[4] = (Button)findViewById(R.id.radiostation5);buttons[5] = (Button)findViewById(R.id.radiostation6);if(currentlyDisplayingFromPosition + 6 >= arraySize) return; for(int i=0; i<arraySize; i++){ buttons[i].setText(""); } for(int i=currentlyDisplayingFromPosition; i<=currentlyDisplayingFromPosition+6; i++){ if (frequency[i] == 0.0) buttons[i].setText(""); else buttons[i].setText("" + frequency[0]); } }我在调用这个函数forwardtune（）在单击下一步按钮。仍然没有运气！有什么建议？I am calling this function forwardtune() in next button click. still no luck! any suggestions?推荐答案您可以通过这个尝试。int currentlyDisplayingFromPosition = 0;int arraySize = 12;public void forwardTune(){ if(currentlyDisplayingFromPosition + 6 >= arraySize) return; for(int i=0; i<arraySize; i++){ textView[i].setText(""); } for(int i=currentlyDisplayingFromPosition; i<=currentlyDisplayingFromPosition+6; i++){ if (frequency[i] == 0.0) textView[i].setText(""); else textView[i].setText("" + frequency[0]); }}同样可以尝试backwardTune（）也与上述相反的code。similarly you can try for backwardTune() also by reversing the above code. 这篇关于安卓：按按钮单击显示值的数组一前一后的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！