Question

我需要知道点击了哪个动态生成的按钮。我的目标是知道用户点击的按钮并根据点击的按钮使用信息。我把代码放在这里，我特别需要click（）方法的帮助。有人可以帮帮我吗？

提前感谢！

public class B3CalibrationExisting extends AppCompatActivity  {

    Button[]  oldButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.b3calibration_existing);
        getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
        getSupportActionBar().setCustomView(R.layout.a0action_bar);

        Intent intent = getIntent();

        LinearLayout layout = (LinearLayout) findViewById(R.id.activity_existingcalibration);
        layout.setOrientation(LinearLayout.VERTICAL);

        ScrollView scrollView = new ScrollView(this);
        layout.addView(scrollView);

        LinearLayout row = new LinearLayout(this);
        row.setOrientation(LinearLayout.VERTICAL);
        row.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
        scrollView.addView(row);

        SharedPreferences sharedPref = this.getSharedPreferences("PREFERENCE_FILE_KEY", Context.MODE_PRIVATE);
        int t = sharedPref.getInt("times",0);

        Set<String> set = sharedPref.getStringSet("calibrationset",null);
        String[] Name = set.toArray(new String[t]);//new String[t]

        String calName = "";
        for(int i=t; i>=0; i--) {

            oldButton[i] = new Button(this);
            oldButton[i].setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
            calName = sharedPref.getString("Button_"+i,"");
            oldButton[i].setText(calName);
            oldButton[i].setId(i);
            row.addView(oldButton[i]);

            oldButton[i].setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                    //your desired functionality
                    click();
                }
            });

        }
    }

    public void click(){

      //I NEED HELP FOR THIS PART 
      // IF I CAN GET ID OF CLICKED BUTTON I WILL BE ABLE TO DO WHAT I WANT 

        int id = oldButton[].getId();

        SharedPreferences sharedPref = this.getSharedPreferences("PREFERENCE_FILE_KEY", Context.MODE_PRIVATE);

        SharedPreferences.Editor editor = sharedPref.edit();
        editor.putInt("id",id);

        editor.commit();

        Intent intent2 = new Intent(this, A3ExperimentFirst.class);
        startActivity(intent2);
    }
}

Answer 1

这可能会起到作用：

library(plotly)
dt <- data.frame(noiseLevel=sort(rep(seq(10,50,10),5)),
                 temperature=rep(seq(50,90,10),5),
                 testScore=c(30,75,20,50,70,
                             40,60,45,20,50,
                             30,20,30,40,30,
                             60,30,60,20,50,
                             30,50,20,40,60))
dt <- within(dt, {
  csum <- ave(testScore, noiseLevel, FUN=cumsum)})

plot_ly(data=dt,
        x = ~noiseLevel,        
        y = ~testScore,
        color=~factor(temperature),
        type='bar') %>%
  layout(barmode='stack',
         annotations = list(x=~noiseLevel, y=~csum, text=~testScore,
                            xanchor = 'center', yanchor = 'center',
                            showarrow = FALSE))

希望这有帮助！

Answer 2

我建议你修改一下你的代码：

final int id=i;
oldButton[i].setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            click(id);
        }
    });

然后重新设计点击功能以直接获取ID：

public void click(int id){

/* there is no more need for this line since id is passed as parameter
int id = oldButton[].getId();
*/

    SharedPreferences sharedPref = this.getSharedPreferences("PREFERENCE_FILE_KEY", Context.MODE_PRIVATE);


    SharedPreferences.Editor editor = sharedPref.edit();
    editor.putInt("id",id);


    editor.commit();


    Intent intent2 = new Intent(this, A3ExperimentFirst.class);
    startActivity(intent2);

}

然而，尽管如此，我认为这是一个糟糕的交易方式。你最好直接写下你的＆＃34; click（）＆＃34;点击监听器上的代码，并使用＆＃34;视图＆＃34;作为参数传递以识别按钮。您可以使用列表而不是Button序列，并使用get（view）来获取ID。

如何知道在android中点击了哪个按钮？

2 个答案: