Android控件属性大全

EditText

// 获取光标当前位置
return dia_et_pwd.getSelectionStart();
// 获取文本框的内容
return dia_et_pwd.getText().toString();
// 清除文本框中的内容
dia_et_pwd.getText().clear();
// 删除指定位置的字符
dia_et_pwd.getText().delete(index - 1, index);
// 设置光标位置
dia_et_pwd.setSelection(index);

<EditText android:id="@+id/displayText"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:singleLine="false"
android:scrollbars="vertical"
android:editable="false"
android:textSize="12px"
android:focusable="false"
/>

EditText displayText = null;
displayText = (EditText)findViewById(R.id.displayText);        displayText.setMovementMethod(ScrollingMovementMethod.getInstance());
displayText.setSelection(displayText.getText().length(),                                                                                     displayText.getText().length());
displayText.getText().append("msg");

textView.setText(Html.fromHtml("测试<font color=red >文字</font>"));
// 往文本框中添加内容
public void addString(String sequence) {
int index = getEditSelection();// 光标的位置
if (index < 0 || index >= getEditTextViewString().length()) {
dia_et_pwd.append(sequence);
Log.i(TAG, "str===" + str);
} else {
dia_et_pwd.getEditableText().insert(index, sequence);// 光标所在位置插入文字
}
}

class EditChangedListener implements TextWatcher {
private CharSequence temp;//监听前的文本
private int editStart;//光标开始位置
private int editEnd;//光标结束位置
private final int charMaxNum = 10;

@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
if (DEBUG)
Log.i(TAG, "输入文本之前的状态");
temp = s;
}

@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (DEBUG)
Log.i(TAG, "输入文字中的状态，count是一次性输入字符数");
mTvAvailableCharNum.setText("还能输入" + (charMaxNum - s.length()) + "字符");

}

@Override
public void afterTextChanged(Editable s) {
if (DEBUG)
Log.i(TAG, "输入文字后的状态");
/** 得到光标开始和结束位置 ,超过最大数后记录刚超出的数字索引进行控制 */
editStart = mEditTextMsg.getSelectionStart();
editEnd = mEditTextMsg.getSelectionEnd();
if (temp.length() > charMaxNum) {
Toast.makeText(getApplicationContext(), "你输入的字数已经超过了限制！", Toast.LENGTH_LONG).show();
s.delete(editStart - 1, editEnd);
int tempSelection = editStart;
mEditTextMsg.setText(s);
mEditTextMsg.setSelection(tempSelection);
}

}
};

mEditTextMsg.addTextChangedListener(new EditChangedListener());

Dialog

final Dialog_Main alertDialog = new Dialog_Main(getActivity(), R.style.my_dialog_style, dialog_view);
alertDialog.setOnCancelListener(new OnCancelListener() {

@Override
public void onCancel(DialogInterface dialog) {
ViewUtil.toast(appContext, "121212");
}
});

布局

RelativeLayout.LayoutParams labelParams = (LayoutParams) label.getLayoutParams();
labelParams.addRule(RelativeLayout.CENTER_HORIZONTAL, 0); // 取消水平居中
labelParams.addRule(RelativeLayout.BELOW, 0); // 取消显示到logo的下方
labelParams.addRule(RelativeLayout.RIGHT_OF, R.id.logo); // 显示到Logo的右方
labelParams.addRule(RelativeLayout.CENTER_VERTICAL); // 垂直居中
label.setLayoutParams(labelParams);

实用属性

android:duplicateParentState="true"

duplicateParentState

<FrameLayout
android:id="@+id/fx_record_right"
android:layout_width="wrap_content"
android:background="@drawable/fl_selector"
android:clickable="true"
android:gravity="center"
android:layout_height="wrap_content">

<TextView
android:layout_width="wrap_content"
android:duplicateParentState="true"
android:layout_height="wrap_content"
android:paddingRight="5dp"
android:layout_gravity="center_horizontal|center_vertical"
android:textSize="14sp" />
</FrameLayout>