Android EditText重新获取焦点弹出软键盘，选中内容

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点击按钮 EditText重新获取焦点:弹出软键盘

                etPatientAllergy.setEnabled(true);                etPatientAllergy.setFocusable(true);                etPatientAllergy.setFocusableInTouchMode(true);                etPatientAllergy.requestFocus();                etPatientAllergy.requestFocusFromTouch();                etPatientAllergy.selectAll();                InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);                imm.showSoftInput(etPatientAllergy, InputMethodManager.RESULT_SHOWN);                imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY);

Android 对话框AlertDialog中显示了一个输入框，EditText自动获得焦点，自动显示软件键盘。

final AlertDialog dialog= new AlertDialog.Builder(mContext).create();editText.setOnFocusChangeListener(new View.OnFocusChangeListener() {   @Override   public void onFocusChange(View v, boolean hasFocus) {       if (hasFocus) {            dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);       }   }});

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