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package matthew.datacollector;

import android.app.Activity;
import android.view.View;
import android.widget.TextView;
import android.widget.RadioGroup;
import android.widget.Toast;
import android.os.Bundle;

public class DataCollectorActivity extends Activity implements RadioGroup.OnCheckedChangeListener, View.OnClickListener {

    private TextView tv;
    private RadioGroup rg;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        this.tv = (TextView) findViewById(R.id.textView1);
        this.rg = (RadioGroup) findViewById(R.id.radioGroup1);
        rg.setOnClickListener(this);
    }

    @Override
    public void onCheckedChanged(RadioGroup group, int checkedId) {
        this.tv.setText("lol");
        Toast.makeText(this.getApplicationContext(), "hey", Toast.LENGTH_LONG).show();
    }

    @Override
    public void onClick(View v) {
        this.tv.setText("lol");
    }
}

我不明白为什么这不起作用：/。我希望它设置 textview 的文本，你甚至可以看到我已经为调试举杯。仍然没有，我也试过没有@Overrides

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1 回答 1

6

您忘记在 RadioGroup 上设置监听器 onCheckedChange：

rg.setOnCheckedChangeListener(this);
于 2012-03-11T19:27:21.213 回答