将浮动消息从活动发送到活动 [英] Send float from activity to activity

问题描述

我正在开始android developmentpement，我不为什么我的代码无法正常工作.目的很简单:我有一个主要活动，一个菜单和第二个活动.我想将一个float值从main发送到第二个活动，并且..它不起作用！

I'm beginning android developpement and i don't why my code is not working. The aim is simple : I have a main activity, a menu and a second activity. I want to send a float value from the main to the second activity and .. it's not working !

这是我的主要代码:

public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case R.id.menu_about:
        Intent intent = new Intent(MainActivity.this, AboutActivity.class);
        startActivity(intent);

        return true;
    case R.id.menu_home:

        return true;
    case R.id.menu_settings:        
        intent = new Intent(MainActivity.this, SettingsActivity.class);
        startActivity(intent);

        return true;
    case R.id.menu_battstat:
        intent = new Intent(MainActivity.this, StatsActivity.class);
        intent.putExtra("consumOn", 4);
        intent.putExtra("consumOff", 5);
        startActivity(intent);

        return true;
    default:
        return super.onOptionsItemSelected(item);
    }

}

还有StatsActivity.class

And the StatsActivity.class

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.stats_main);

    Intent intent = getIntent();

    float consumOn  = intent.getFloatExtra("consumOn", 0);
    float consumOff = intent.getFloatExtra("consumOff", 0);

    EditText editTextA = (EditText)findViewById(R.id.editText1);
    editTextA.setText(String.valueOf(consumOn), TextView.BufferType.EDITABLE);

    EditText editTextB = (EditText)findViewById(R.id.editText2);
    editTextB.setText(String.valueOf(consumOff), TextView.BufferType.EDITABLE);
} 

启动代码时，它仍然是0，而不是4和5.有什么想法吗?谢谢.

When I launch my code, it stills 0 and not a 4 and 5. Any ideas ? Thx.

推荐答案

将getFloatExtra替换为

Bundle bundle = getIntent().getExtras();
float yourFloat = bundle.getFloat("key");

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