Android文本输入框(EditText)输入密码时显示与隐藏

代码很简单，这里就不多废话了。

package cc.c;
import android.app.activity;
import android.os.bundle;
import android.text.selection;
import android.text.spannable;
import android.text.method.hidereturnstransformationmethod;
import android.text.method.passwordtransformationmethod;
import android.view.view;
import android.view.view.onclicklistener;
import android.widget.button;
import android.widget.edittext;
/**
 * demo描述:
 * 文本输入框(edittext)切换密码的显示与隐藏
 *
 * 参考资料:
 * 1 http://developer.android.com/reference/android/text/method/hidereturnstransformationmethod.html
 * 2 http://developer.android.com/reference/android/text/method/passwordtransformationmethod.html
 *   thank you very much
 */
public class mainactivity extends activity {
    private button mswitchbutton;
    private edittext mpasswordedittext;
    private boolean ishidden=true;
    @override
    public void oncreate(bundle savedinstancestate) {
        super.oncreate(savedinstancestate);
        setcontentview(r.layout.main);
        init();
    }
    private void init(){
        mswitchbutton=(button) findviewbyid(r.id.button);
        mpasswordedittext=(edittext) findviewbyid(r.id.edittext);
        mswitchbutton.setonclicklistener(new onclicklistener() {
            @override
            public void onclick(view v) {
                if (ishidden) {
                    //设置edittext文本为可见的
                    mpasswordedittext.settransformationmethod(hidereturnstransformationmethod.getinstance());
                } else {
                    //设置edittext文本为隐藏的
                    mpasswordedittext.settransformationmethod(passwordtransformationmethod.getinstance());
                }
                ishidden = !ishidden;
                mpasswordedittext.postinvalidate();
                //切换后将edittext光标置于末尾
                charsequence charsequence = mpasswordedittext.gettext();
                if (charsequence instanceof spannable) {
                    spannable spantext = (spannable) charsequence;
                    selection.setselection(spantext, charsequence.length());
                }
 
            }
        });
    }
    
}

有相同需求的小伙伴过来参考下吧，可以直接拿去使用。