Android(安卓)资源名获取R文件id
16lz
2021-01-26
也就是通过res文件夹下的资源名称获取R文件里面生成的id, 这个id用起来和在代码中使用R.XXX.XXX一样.
获取方法为:
getResources().getIdentifier(String name, String defType, String defPackage)上图上代码
@Override public void onClick(View v) { switch (v.getId()) { case R.id.btn_setImage: int imageId = getResources().getIdentifier("image", "drawable", getPackageName()); mImage.setImageResource(imageId); break; case R.id.btn_setText: int textId = getResources().getIdentifier("text", "string", getPackageName()); mBtnSetText.setText(textId); break; case R.id.btn_setColor: int colorId = getResources().getIdentifier("colorPrimary", "color", getPackageName()); mBtnSetColor.setTextColor(getResources().getColor(colorId)); break; default: break; } }
Parameters
| name | The name of the desired resource. |
| defType | Optional default resource type to find, if “type/” is not included in the name. Can be null to require an explicit type. |
| defPackage | Optional default package to find, if “package:” is not included in the name. Can be null to require an explicit package. |
Returns
int The associated resource identifier. Returns 0 if no such resource was found. (0 is not a valid resource ID.)
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