Android下自定义IP控件

在Android原生控件中，没有IP输入控件，于是自定义一个，如果有bug或者代码上的问题，欢迎大家提出，先谢谢大家。

控件代码如下：

import android.content.Context;
import android.graphics.drawable.GradientDrawable;
import android.text.Editable;
import android.text.InputFilter;
import android.text.InputType;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.Gravity;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

public class IPEdit extends LinearLayout{

private EditText mIpAddrEdt1 = null;
private EditText mIpAddrEdt2 = null;
private EditText mIpAddrEdt3 = null;
private EditText mIpAddrEdt4 = null;

private TextView mPointTv1 = null;
private TextView mPointTv2 = null;
private TextView mPointTv3 = null;

private TextWatcher mTextWatcher = null;

private Context mParentContext = null;

public IPEdit(Context context, AttributeSet attrs)
{
super(context, attrs);
init();

}

public IPEdit(Context context)
{
super(context);
init();
}

public String getText()
{
StringBuilder strBuild = new StringBuilder();
String wsIp1 = mIpAddrEdt1.getText().toString();
String wsIp2 = mIpAddrEdt2.getText().toString();
String wsIp3 = mIpAddrEdt3.getText().toString();
String wsIp4 = mIpAddrEdt4.getText().toString();
String wsPoint = ".";
strBuild.append(wsIp1);
strBuild.append(wsPoint);
strBuild.append(wsIp2);
strBuild.append(wsPoint);
strBuild.append(wsIp3);
strBuild.append(wsPoint);
strBuild.append(wsIp4);
return strBuild.toString();
}

private void init()
{
mParentContext = this.getContext();
mIpAddrEdt1 = new EditText(mParentContext);
mIpAddrEdt2 = new EditText(mParentContext);
mIpAddrEdt3 = new EditText(mParentContext);
mIpAddrEdt4 = new EditText(mParentContext);
initEditText(mIpAddrEdt1);
initEditText(mIpAddrEdt2);
initEditText(mIpAddrEdt3);
initEditText(mIpAddrEdt4);
mPointTv1 = new TextView(mParentContext);
mPointTv2 = new TextView(mParentContext);
mPointTv3 = new TextView(mParentContext);
initTextView(mPointTv1);
initTextView(mPointTv2);
initTextView(mPointTv3);
drawFrame();
seftLayout();

mTextWatcher = new TextWatcher()
{
@Override
public void afterTextChanged(Editable s)
{
}

@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after)
{
}

@Override
public void onTextChanged(CharSequence s, int start, int before,
int count)
{
String wsText = null;
EditText focusedEdt = getFocuseEdt();
if(focusedEdt == null)
return;
if (s != null && s.length() > 0) {
if (s.length() > 2 || s.toString().trim().contains(".")) {
if (s.toString().trim().contains(".")) {
wsText = s.toString().substring(0, s.length() - 1);
focusedEdt.setText(wsText);
}
else {
wsText = s.toString().trim();
}
if (Integer.parseInt(wsText) > 255) {
Toast.makeText(mParentContext, "请输入合法的ip地址",
Toast.LENGTH_LONG).show();
return;
}
EditText nextFocuseEdt = getNextFocuseEdt();
if(nextFocuseEdt != null)
{
nextFocuseEdt.setFocusable(true);
nextFocuseEdt.requestFocus();
}else
{
return;
}
}
else if(s.length() >= 2 && (s.toString().startsWith("0")) == true)
{
wsText = s.toString().substring(1, s.length());
focusedEdt.setText(wsText);
focusedEdt.setSelection(wsText.length());
}
}
if (start == 0 && s.length() == 0) {
EditText prevEdt = getPrevFocuseEdt();
if(prevEdt != null)
{
prevEdt.setFocusable(true);
prevEdt.requestFocus();
}
}
}
};
addTextChangeListener();
}

private EditText getFocuseEdt()
{
if(mIpAddrEdt1.isFocused())
return mIpAddrEdt1;
if(mIpAddrEdt2.isFocused())
return mIpAddrEdt2;
if(mIpAddrEdt3.isFocused())
return mIpAddrEdt3;
if(mIpAddrEdt4.isFocused())
return mIpAddrEdt4;
return null;
}

private EditText getNextFocuseEdt()
{
EditText focusedEdt = getFocuseEdt();
if(focusedEdt == mIpAddrEdt1)
return mIpAddrEdt2;
if(focusedEdt == mIpAddrEdt2)
return mIpAddrEdt3;
if(focusedEdt == mIpAddrEdt3)
return mIpAddrEdt4;
return null;
}

private EditText getPrevFocuseEdt()
{
EditText focusedEdt = getFocuseEdt();
if(focusedEdt == mIpAddrEdt4)
return mIpAddrEdt3;
if(focusedEdt == mIpAddrEdt3)
return mIpAddrEdt2;
if(focusedEdt == mIpAddrEdt2)
return mIpAddrEdt1;
return null;

}

private void drawFrame()
{
GradientDrawable drawable = new GradientDrawable();
drawable.setShape(GradientDrawable.RECTANGLE);
drawable.setStroke(1, 0xFFC8C7C7); //
drawable.setColor(0xFFFFFFFF);
this.setBackground(drawable);
}

private void initEditText(EditText edtText)
{
edtText.setFilters(new InputFilter[]{new InputFilter.LengthFilter(4)});
edtText.setMaxLines(1);
edtText.setInputType( InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL);
edtText.setBackground(null);
edtText.setGravity(Gravity.CENTER);
}

private void initTextView(TextView textView)
{
textView.setBackground(null);
textView.setText(".");
}

private void seftLayout()
{
this.setOrientation(LinearLayout.HORIZONTAL);
edtTextLayout(mIpAddrEdt1);
textViewLayout(mPointTv1);
edtTextLayout(mIpAddrEdt2);
textViewLayout(mPointTv2);
edtTextLayout(mIpAddrEdt3);
textViewLayout(mPointTv3);
edtTextLayout(mIpAddrEdt4);
}

private void edtTextLayout(EditText edt)
{
int lHeight = LinearLayout.LayoutParams.WRAP_CONTENT;
int lWidth = LinearLayout.LayoutParams.WRAP_CONTENT;
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(lHeight, lWidth);
lp.weight = 1;
this.addView(edt, lp);
}

private void textViewLayout(TextView txtView)
{
int lHeight = LinearLayout.LayoutParams.WRAP_CONTENT;
int lWidth = LinearLayout.LayoutParams.WRAP_CONTENT;
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(lHeight, lWidth);
this.addView(txtView, lp);
}

private void addTextChangeListener()
{
mIpAddrEdt1.addTextChangedListener(mTextWatcher);
mIpAddrEdt2.addTextChangedListener(mTextWatcher);
mIpAddrEdt3.addTextChangedListener(mTextWatcher);
mIpAddrEdt4.addTextChangedListener(mTextWatcher);
}
}

以上，IPEdit拿过去就可以适用，已经测试过了，可以正常适用。如果什么问题，欢迎大家提出，然后再对其进行修改。

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