03_输出程序状态信息

import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity {
 StringBuilder builder = new StringBuilder();
    TextView textView;

    private void log(String text) {
        Log.d("LifeCycleTest", text);
        builder.append(text);
        builder.append('\n');
        textView.setText(builder.toString());
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        textView = new TextView(this);
        textView.setText(builder.toString());
        setContentView(textView);
        log("created");
    }

    @Override
    protected void onResume() {
        super.onResume();
        log("resumed");
    }

    @Override
    protected void onPause() {
        super.onPause();
        log("paused");

        if (isFinishing()) {
            log("finishing");
        }
    }

}