清理缓存

首先依赖好jar包

在点击事件中写

try {
    String s = CliearUyils.getdqSize(ShezhiActivity.this);
    tv_size.setText(s);
} catch (Exception e) {
    e.printStackTrace();
}
CliearUyils.clearAllCache(ShezhiActivity.this);      

重写onRestart

@Override
protected void onRestart() {
    super.onRestart();

    try {
        String  s = CliearUyils.getdqSize(ShezhiActivity.this);
        tv_size.setText(s);
    } catch (Exception e) {
        e.printStackTrace();
    }
}