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import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
/**
* ignoreCnOrEn 为false的时候
* 1个中文算1个
* 2个英文算1个
*
* 另外:如:只有一个英文时也算1个
*
*/
public class LinesEditView extends LinearLayout {
private Context mContext;
private EditText id_et_input;
private TextView id_tv_input;
private int MAX_COUNT;
private String hintText;
private int hintTextColor;
private boolean ignoreCnOrEn;
private String contentText;
private int contentTextSize;
private int contentTextColor;
private float contentViewHeight;
public LinesEditView(Context context) {
this(context, null);
}
public LinesEditView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public LinesEditView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
mContext = context;
TypedArray typedArray = context.obtainStyledAttributes(attrs,
R.styleable.LinesEditView);
MAX_COUNT = typedArray.getInteger(R.styleable.LinesEditView_classic_maxCount, 240);
ignoreCnOrEn = typedArray.getBoolean(R.styleable.LinesEditView_classic_ignoreCnOrEn, true);
hintText = typedArray.getString(R.styleable.LinesEditView_classic_hintText);
hintTextColor = typedArray.getColor(R.styleable.LinesEditView_classic_hintTextColor, Color.parseColor("#42000000"));
contentText = typedArray.getString(R.styleable.LinesEditView_classic_contentText);
contentTextColor = typedArray.getColor(R.styleable.LinesEditView_classic_contentTextColor, Color.parseColor("#8A000000"));
contentTextSize = typedArray.getDimensionPixelSize(R.styleable.LinesEditView_classic_contentTextSize, dp2px(context, 14));
contentViewHeight = typedArray.getDimensionPixelSize(R.styleable.LinesEditView_classic_contentViewHeight,
dp2px(context, 140));
typedArray.recycle();
//
init();
}
private void init() {
View view = LayoutInflater.from(mContext).inflate(R.layout.layout_lines_edit_view, this);
id_et_input = (EditText) view.findViewById(R.id.id_et_input);
id_tv_input = (TextView) view.findViewById(R.id.id_tv_input);
if (this.getBackground() == null) {
this.setBackgroundResource(R.drawable.selector_lines_edit_view_bg);
}
id_et_input.addTextChangedListener(mTextWatcher);
id_et_input.setHint(hintText);
id_et_input.setHintTextColor(hintTextColor);
id_et_input.setText(contentText);
id_et_input.setTextColor(contentTextColor);
id_et_input.setTextSize(TypedValue.COMPLEX_UNIT_PX, contentTextSize);
id_et_input.setHeight((int) contentViewHeight);
/**
* 配合 id_tv_input xml的 android:focusable="true"
android:focusableInTouchMode="true"
在id_et_input设置完文本后
不给id_et_input 焦点
*/
id_tv_input.requestFocus();
//init
configCount();
id_et_input.setSelection(id_et_input.length()); // 将光标移动最后一个字符后面
/**
* focus后给背景设置Selected
*/
id_et_input.setOnFocusChangeListener(new OnFocusChangeListener() {
@Override
public void onFocusChange(View view, boolean b) {
LinesEditView.this.setSelected(b);
}
});
}
private TextWatcher mTextWatcher = new TextWatcher() {
private int editStart;
private int editEnd;
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void afterTextChanged(Editable editable) {
editStart = id_et_input.getSelectionStart();
editEnd = id_et_input.getSelectionEnd();
// 先去掉监听器,否则会出现栈溢出
id_et_input.removeTextChangedListener(mTextWatcher);
if (ignoreCnOrEn) {
//当输入字符个数超过限制的大小时,进行截断操作
while (calculateLengthIgnoreCnOrEn(editable.toString()) > MAX_COUNT) {
editable.delete(editStart - 1, editEnd);
editStart--;
editEnd--;
}
} else {
// 因为是中英文混合,单个字符而言,calculateLength函数都会返回1
while (calculateLength(editable.toString()) > MAX_COUNT) { // 当输入字符个数超过限制的大小时,进行截断操作
editable.delete(editStart - 1, editEnd);
editStart--;
editEnd--;
}
}
id_et_input.setSelection(editStart);
// 恢复监听器
id_et_input.addTextChangedListener(mTextWatcher);
//update
configCount();
}
};
private long calculateLength(CharSequence c) {
double len = 0;
for (int i = 0; i < c.length(); i++) {
int tmp = (int) c.charAt(i);
if (tmp > 0 && tmp < 127) {
len += 0.5;
} else {
len++;
}
}
return Math.round(len);
}
private int calculateLengthIgnoreCnOrEn(CharSequence c) {
int len = 0;
for (int i = 0; i < c.length(); i++) {
len++;
}
return len;
}
private void configCount() {
long currentCount;
if (ignoreCnOrEn) {
int nowCount = calculateLengthIgnoreCnOrEn(id_et_input.getText().toString());
currentCount = nowCount;
//
id_tv_input.setText(String.valueOf((MAX_COUNT - nowCount)) + "/" + MAX_COUNT);
} else {
long nowCount = calculateLength(id_et_input.getText().toString());
currentCount = nowCount;
//
id_tv_input.setText(String.valueOf((MAX_COUNT - nowCount)) + "/" + MAX_COUNT);
}
// if (MAX_COUNT == currentCount) {
// Toast.makeText(mContext, "最多输入" + MAX_COUNT + "个字符", Toast.LENGTH_SHORT).show();
// }
}
private static int dp2px(Context context, float dp) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (dp * scale + 0.5f);
}
public void setContentText(String content) {
contentText = content;
if (id_et_input == null) {
return;
}
id_et_input.setText(contentText);
}
public String getContentText() {
if (id_et_input != null) {
contentText = id_et_input.getText() == null ? "" : id_et_input.getText().toString();
}
return contentText;
}
public void setHintText(String hintText) {
this.hintText = hintText;
if (id_et_input == null) {
return;
}
id_et_input.setHint(hintText);
}
public void setContentTextSize(int size) {
if (id_et_input == null) {
return;
}
id_et_input.setTextSize(TypedValue.COMPLEX_UNIT_PX, size);
}
public void setContentTextColor(int color) {
if (id_et_input == null) {
return;
}
id_et_input.setTextColor(color);
}
public void setHintColor(int color) {
if (id_et_input == null) {
return;
}
id_et_input.setHintTextColor(color);
}
public String getHintText() {
if (id_et_input != null) {
hintText = id_et_input.getHint() == null ? "" : id_et_input.getHint().toString();
}
return hintText;
}
public void setMaxCount(int max_count) {
this.MAX_COUNT = max_count;
configCount();
}
public void setIgnoreCnOrEn(boolean ignoreCnOrEn) {
this.ignoreCnOrEn = ignoreCnOrEn;
configCount();
}
}
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}