TextView变色点击,用户协议点击事件

2020-03-16  本文已影响0人  jjkopen

实现效果:文本部分文字可点击

效果.png
1.添加点击:
 binding.tvAgree.setText("已阅读并同意");
        SpannableString ssPri = new SpannableString("《用户服务协议》");
        ssPri.setSpan(new ClickableSpan() {
            @Override
            public void onClick(View view) {
                Toast.makeText(LoginActivity.this, "用户服务协议", Toast.LENGTH_SHORT).show();
//                startActivity(new Intent(this, PrivateActivity.class));
            }
        }, 0, ssPri.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
binding.tvAgree.append(ssPri);
//处理点击后Span变色
binding.tvAgree.setHighlightColor(getResources().getColor(android.R.color.transparent));
STEP1.png
2.去除下划线:
···
ssPri.setSpan(new ClickableSpan() {
            @Override
            public void onClick(View view) {
                Toast.makeText(LoginActivity.this, "用户服务协议", Toast.LENGTH_SHORT).show();
//                startActivity(new Intent(this, PrivateActivity.class));
            }
            @Override
            public void updateDrawState(@NonNull TextPaint ds) {
                super.updateDrawState(ds);
//                ds.setColor(ds.linkColor); //设置颜色
                ds.setUnderlineText(false); //去除下划线

            }
        }, 0, ssPri.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
···
STEP2.png
3.点击事件冲突:

点击富文本时,同时会触发TextView/LinearLayout的点击事件。
案例的布局为LinearLayout包含CheckBox和TextView,LinearLayout点击事件触发CheckBox点击事件,TextView无点击事件。
binding.llAgree.setOnClickListener(v -> binding.cbAgree.performClick());
此时,点击文本时,ClickableSpan和LinearLayout的点击事件同时触发。
通过setMovementMethod处理点击事件

binding.tvAgree.setMovementMethod(new LinkMovementMethod() {
            @Override
            public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
            // 因为TextView没有点击事件,所以点击TextView的非富文本时,super.onTouchEvent()返回false;
            // 此时可以让TextView的父容器执行点击事件;
                boolean isConsume = super.onTouchEvent(widget, buffer, event);
                if (!isConsume && event.getAction() == MotionEvent.ACTION_UP) {
                    ViewParent parent = widget.getParent();
                    if (parent instanceof ViewGroup) {
                        // 获取被点击控件的父容器,让父容器执行点击;
                        ((ViewGroup) parent).performClick();
                    }
                }
                return isConsume;
            }
        });

完整CODE:

        binding.tvAgree.setText("已阅读并同意");
        SpannableString ssPri = new SpannableString("《用户服务协议》");
        ssPri.setSpan(new ClickableSpan() {
            @Override
            public void onClick(View view) {
                Toast.makeText(LoginActivity.this, "用户服务协议", Toast.LENGTH_SHORT).show();
//                startActivity(new Intent(this, PrivateActivity.class));
            }

            @Override
            public void updateDrawState(@NonNull TextPaint ds) {
                super.updateDrawState(ds);
//                ds.setColor(ds.linkColor);
                ds.setUnderlineText(false);
            }
        }, 0, ssPri.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        binding.tvAgree.setMovementMethod(new LinkMovementMethod() {
            @Override
            public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
                boolean isConsume = super.onTouchEvent(widget, buffer, event);
                if (!isConsume && event.getAction() == MotionEvent.ACTION_UP) {
                    ViewParent parent = widget.getParent();
                    if (parent instanceof ViewGroup) {
                        // 获取被点击控件的父容器,让父容器执行点击;
                        ((ViewGroup) parent).performClick();
                    }
                }
                return isConsume;
            }
        });
        binding.tvAgree.append(ssPri);
        //处理点击后Span变色
        binding.tvAgree.setHighlightColor(getResources().getColor(android.R.color.transparent));
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