恢复出厂设置需要添加密码输入才能点击恢复出厂设置

自定义输入密码框

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package com.android.settings;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.widget.EditText;

import static android.graphics.Paint.ANTI_ALIAS_FLAG;

    public class PasswordInputView extends EditText {
        //外边框颜色
        private int borderColor = 0xFFCCCCCC;
        //外边框线的粗细
        private float borderWidth = 5;
        //外边框圆角半径
        private float borderRadius = 3;
        //中间分割线粗细
        private float dividerWidth = 3;
        //密码长度，默认6个字符
        private int passwordLength = 6;
        //密码文字颜色
        private int passwordColor = 0xFFCCCCCC;
        //密码圆点的半径
        private float passwordRadius = 3;
        //画笔
        private Paint paint;
        //整个view的宽，高
        private int width, height;
    public PasswordInputView(Context context, AttributeSet attrs) {
        super(context, attrs);

        DisplayMetrics dm = getResources().getDisplayMetrics();
        borderWidth = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, borderWidth, dm);
        borderRadius = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, borderRadius, dm);
        passwordLength = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, passwordLength, dm);
        passwordRadius = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, passwordRadius, dm);
        //获得自定义属性的值
        TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.PasswordInputView, 0, 0);
        borderColor = a.getColor(R.styleable.PasswordInputView_pivBorderColor, borderColor);
        borderWidth = a.getDimension(R.styleable.PasswordInputView_pivBorderWidth, borderWidth);
        borderRadius = a.getDimension(R.styleable.PasswordInputView_pivBorderRadius, borderRadius);
        passwordLength = a.getInt(R.styleable.PasswordInputView_pivPasswordLength, passwordLength);
        passwordColor = a.getColor(R.styleable.PasswordInputView_pivPasswordColor, passwordColor);
        passwordRadius = a.getDimension(R.styleable.PasswordInputView_pivPasswordRadius, passwordRadius);
        dividerWidth = a.getDimension(R.styleable.PasswordInputView_dividerWidth, dividerWidth);
        a.recycle();

        paint = new Paint(ANTI_ALIAS_FLAG);
    }
  @Override
    protected void onDraw(Canvas canvas) {
        width = getWidth();
        height = getHeight();
        drawBorder(canvas);
        drawDivider(canvas);
        drawCircle(canvas);

    }
    //绘制外边框
    private void drawBorder(Canvas canvas) {
        paint.setStyle(Paint.Style.STROKE);
        paint.setColor(borderColor);
        paint.setStrokeWidth(borderWidth);
        RectF rectF = new RectF(0, 0, width, height);
        canvas.drawRoundRect(rectF, borderRadius, borderRadius, paint);
    }
    //绘制分割线
    private void drawDivider(Canvas canvas) {
        paint.setStyle(Paint.Style.STROKE);
        paint.setColor(borderColor);
        paint.setStrokeWidth(dividerWidth);
        for (int i = 1; i < passwordLength; i++) {
            int x = i * (width / passwordLength);
            canvas.drawLine(x, 0, x, height, paint);
        }
    }
    //绘制圆点
    private void drawCircle(Canvas canvas) {
        paint.setStyle(Paint.Style.FILL);
        paint.setColor(passwordColor);
        String content = getText().toString().trim();
        for (int i = 0; i < content.length(); i++) {
            int cx = width / passwordLength / 2 + i * width / passwordLength;
            int cy = height / 2;
            canvas.drawCircle(cx, cy, width / passwordLength / 8, paint);
        }
    }
    @Override
    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
        super.onTextChanged(text, start, lengthBefore, lengthAfter);
        invalidate();
        //密码输入完成后做的操作，例如密码验证，页面跳转等
        if (text.length() == passwordLength) {
            if (onCompleteListener != null) {
                onCompleteListener.onComplete(text);
            }
        }
    }
    private OnCompleteListener onCompleteListener;

    public void setOnCompleteListener(OnCompleteListener onCompleteListener) {
        this.onCompleteListener = onCompleteListener;
    }

    public interface OnCompleteListener {
        void onComplete(CharSequence text);
    }
}

自定义数字属性

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<declare-styleable name="PasswordInputView">
      <attr name="pivBorderColor" format="color"/>
      <attr name="pivBorderWidth" format="dimension"/>
      <attr name="pivBorderRadius" format="dimension"/>
      <attr name="pivPasswordColor" format="color"/>
      <attr name="pivPasswordWidth" format="dimension"/>
      <attr name="pivPasswordRadius" format="dimension"/>
      <attr name="pivPasswordLength" format="integer"/>
      <attr name="dividerWidth" format="dimension"/>
  </declare-styleable>

布局文件

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<!--add by chensy 添加恢复出厂设置 添加密码 start-->
<com.android.settings.PasswordInputView
    android:id="@+id/passwordInputView"
    android:layout_width="match_parent"
    android:layout_height="56dp"
    android:layout_margin="10dp"
    android:cursorVisible="false"
    android:inputType="number"
    app:pivBorderColor="#808080"
    app:pivBorderRadius="5dp"
    app:pivBorderWidth="1dp"
    app:pivPasswordColor="#808080"
    app:dividerWidth="0.5dp"
    android:maxLength="8"
    app:pivPasswordLength="8"
    android:background="@null"
    android:focusable="true" />
<!--add by chensy 添加恢复出厂设置 密码 end-->

添加恢复出厂设置输入密码

packages/apps/Settings/src/com/android/settings/MasterClearConfirm.java

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  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
          Bundle savedInstanceState) {
      if (UserManager.get(getActivity()).hasUserRestriction(
              UserManager.DISALLOW_FACTORY_RESET)) {
          return inflater.inflate(R.layout.master_clear_disallowed_screen, null);
      }
mContentView = inflater.inflate(R.layout.master_clear_confirm, null);
      /**add by chensy 添加恢复出厂设置密码*/
      inputView = (PasswordInputView)mContentView.findViewById(R.id.passwordInputView);
      inputView.setFocusable(true);
      inputView.requestFocus();
      inputView.setOnCompleteListener(new PasswordInputView.OnCompleteListener() {
          @Override
          public void onComplete(CharSequence text) {
              Log.d("chensy", "onComplete: "+text);
              passwd = text;
          }
      });
      /** add by chensy 添加恢复出厂设置密码 */
      establishFinalConfirmationState();
      return mContentView;
  }