android中的R中属性获取相干

android中的R中属性获取相关

1.根据R中属性的内存地址获取属性的名称：

? ?? getString(R.string.app_name)

2. 根据R中属性的名称获取属性对应的内存地址：

getResources().getIdentifier("icon", R.drawable.class.getSimpleName(), R.class.getPackage().getName())

?

?

测试代码：

?

public class RSourceActivity extends Activity {private static final String TAG = "RSourceActivity";    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        Log.e(TAG, "===:" + getString(R.string.app_name));        Log.e(TAG, "===:" +getRInt("icon"));        Log.e(TAG, "===:" + getResources().getIdentifier("icon", R.drawable.class.getSimpleName(), R.class.getPackage().getName()));    }    /**     * 根据R中资源的名称获取对应的内存地址     * @param name     * @return     */private int getRInt(String name){Field[] fields = R.drawable.class.getDeclaredFields();for (Field field : fields) {if (field.getName().equals(name)) {try {return field.getInt(R.drawable.class);} catch (Exception e) {e.printStackTrace();}}}return 0;}}