调用显示ProgressDialog的新Activity后隐藏键盘 [英] Hiding keyboard after calling new Activity that shows a ProgressDialog

问题描述

我在屏幕键盘上遇到麻烦。我有一个活动，一个 EditText 显示键盘，还有一个按钮进入第二个活动。第二个活动在其 onCreate（）上显示一个 ProgressDialog ，执行内容，并关闭 ProgressDialog 。问题是，当显示 ProgressDialog 时，键盘也会显示。

我希望键盘消失在创建 ProgressDialog 之前。我搜索了两个StackOverflow和其他网站，但是似乎没有任何效果。

我附上两张图供您参考：

http://i45.tinypic.com/2rzq7b6.png http://i45.tinypic.com/34ret1z.png

这是第一个活动的代码：

  public class FirstActivity extends Activity {
 @Override 
 public void onCreate （Bundle savedInstanceState）{
 super.onCreate（savedInstanceState）; 
 setContentView（R.layout.main）; 
 
 findViewById（R.id.button1）.setOnClickListener（new OnClickListener（）{
 @Override 
 public void onClick（View arg0）{
 Intent intent = new Intent（FirstActivity.this，SecondActivity.class）; 
 startActivity（intent）; 
} 
}）; 
} 
} 
  

这是第二个活动的代码： / p>

  public class SecondActivity extends Activity {
 @Override 
 public void onCreate（Bundle savedInstanceState）{
 super.onCreate（savedInstanceState）; 
 setContentView（R.layout.second）; 
 
 // TODO：hide keyboard here 
 
 final ProgressDialog dialog = ProgressDialog.show（this，，Please wait ...，true，false，null） ; 
 
 //在实际代码中，这里有一个AsyncTask做的东西... 
 new Handler（）。postDelayed（new Runnable（）{
 @Override 
 public void run（）{
 dialog.dismiss（）; 
} 
}，5000）; 
} 
} 
  

谢谢

解决方案

使用由phalt发布的技术的变体解决：

  InputMethodManager im =（InputMethodManager）this.getApplicationContext（）。getSystemService（Context.INPUT_METHOD_SERVICE）; 
 im.hideSoftInputFromWindow（getWindow（）。getDecorView（）。getWindowToken（），InputMethodManager.HIDE_NOT_ALWAYS）; 
  

此代码在 onCreate / onStart / onResume ，因为不依赖于集中的视图来获取窗口标记。

I'm having trouble with the on screen keyboard. I have an activity with an EditText which shows the keyboard, and a button to go to a second activity. The second activity shows a ProgressDialog on its onCreate(), does stuff, and dismisses the ProgressDialog. The problem is that while the ProgressDialog is displayed, so is the keyboard.

I would like the keyboard to disappear before creating the ProgressDialog. I searched thorougly both StackOverflow and other sites, but nothing seems to work with this particular scenario.

I'm attaching two pics for your reference:

http://i45.tinypic.com/2rzq7b6.png http://i45.tinypic.com/34ret1z.png

This is the code of the first activity:

public class FirstActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        findViewById(R.id.button1).setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View arg0) {
                Intent intent = new Intent(FirstActivity.this, SecondActivity.class);
                startActivity(intent);
            }
        });
    }
}

and this is the code of the second activity:

public class SecondActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second);

        // TODO: hide keyboard here

        final ProgressDialog dialog = ProgressDialog.show(this, "", "Please wait...", true, false, null);

        // in real code, here there is an AsyncTask doing stuff...
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                dialog.dismiss();
            }
        }, 5000);
    }
}

Thanks

解决方案

Solved using a variation of the technique posted by phalt:

InputMethodManager im = (InputMethodManager) this.getApplicationContext().getSystemService(Context.INPUT_METHOD_SERVICE);
im.hideSoftInputFromWindow(getWindow().getDecorView().getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);

This code works correctly during onCreate/onStart/onResume, since doesn't rely on a focused view to get the window token from.

这篇关于调用显示ProgressDialog的新Activity后隐藏键盘的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！