弹出对话框

最新推荐文章于 2023-02-19 20:32:14 发布

原创最新推荐文章于 2023-02-19 20:32:14 发布 · 269 阅读

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CC 4.0 BY-SA版权

这篇文章主要实现的功能是：

点击按钮，弹出对话框，在对话框编辑文本，并把编辑后的结果显示在按钮上

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    init();
}

private void init() {
    button11 = (Button) findViewById(R.id.btn_readandwrite);
    button11.setOnClickListener(this);
}

@Override
public void onClick(View view) {
    test4();
}

private void test4() {
    AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);
    builder.setTitle("输入待测试次数");
    builder.setMessage("请输入次数");
    final EditText et=new EditText(MainActivity.this);
    et.setSingleLine();
    et.setHint("请输入文本");
    builder.setView(et);
    builder.setPositiveButton("确定", new DialogInterface.OnClickListener(){
        @Override
        public void onClick(DialogInterface dialog, int which) {
            String name=et.getText().toString().trim();
            if ("".equals(name)) {
                Toast.makeText(getApplicationContext(), "不能为空", Toast.LENGTH_SHORT).show();
                return ;
            }else{
                SharedPreferences sp=getSharedPreferences("myname",MODE_PRIVATE);
                SharedPreferences.Editor editor=sp.edit();
                editor.putString("lost_name", name);
                editor.commit();
                button11.setText(name);
            }
        }
    }).setNegativeButton("取消", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
        }
    });
    builder.create().show();
}